research paper in pdf

Academia.edu no longer supports Internet Explorer.

To browse Academia.edu and the wider internet faster and more securely, please take a few seconds to  upgrade your browser .

• We're Hiring!
• Help Center

Download 55 million PDFs for free

Explore our top research interests.

Engineering

Anthropology

• Earth Sciences

• Computer Science

• Mathematics

• Health Sciences

Join 268 million academics and researchers

Track your impact.

Share your work with other academics, grow your audience and track your impact on your field with our robust analytics

Discover new research

Get access to millions of research papers and stay informed with the important topics around the world

Publish your work

Publish your research with fast and rigorous service through Academia.edu Journals. Get instant worldwide dissemination of your work

Unlock the most powerful tools with Academia Premium

Work faster and smarter with advanced research discovery tools

Search the full text and citations of our millions of papers. Download groups of related papers to jumpstart your research. Save time with detailed summaries and search alerts.

• Advanced Search
• PDF Packages of 37 papers
• Summaries and Search Alerts

Share your work, track your impact, and grow your audience

Get notified when other academics mention you or cite your papers. Track your impact with in-depth analytics and network with members of your field.

• Mentions and Citations Tracking
• Advanced Analytics
• Publishing Tools

Real stories from real people

Used by academics at over 15,000 universities

Get started and find the best quality research

• Academia.edu Journals
•   We're Hiring!
•   Help Center
• Find new research papers in:
• Cognitive Science
• Academia ©2024

“The only truly modern academic research engine”

Oa.mg is a search engine for academic papers, specialising in open access. we have over 250 million papers in our index..

Research paper

Research paper is a written report which contains the results of original scientific research (primary research article) or the review of published scientific papers on one or several science topics (review article). In primary research articles, the authors give vital information about the research that allows other members of the scientific community to evaluate it, reproduce science experiments, and also to assess the reasoning and conclusions drawn from them. Review articles are designed to analyze, evaluate, summarize or synthesize research already conducted in primary academic sources. Quite often, a science article combines these two types of scientific text, including the overview and original parts.

Currently, the number of scientific articles in open access is growing fast, but all of them are spread on numerous science websites on the Internet, and therefore it is hard for a researcher to find the necessary information for new science discoveries or download PDF due to the unreliability of websites.

CyberLeninka is intended to solve this problem. We provide platform, which aggregates a lot of free articles from various open access peer-reviewed journals . And our global goal is to build new research infrastructure for academia.

Directory of open access articles based on OECD fields of science and technology

• Medical and Health sciences
• Basic medicine
• Clinical medicine
• Health sciences
• Health biotechnology
• Natural sciences
• Mathematics
• Computer and information sciences
• Physical sciences
• Chemical sciences
• Earth and related environmental sciences
• Biological sciences
• Engineering and Technology
• Civil engineering
• Electrical engineering, electronic engineering, information engineering
• Mechanical engineering
• Chemical engineering
• Materials engineering
• Medical engineering
• Environmental engineering
• Environmental biotechnology
• Industrial biotechnology
• Nano technology
• Agricultural sciences
• Agriculture, forestry, and fisheries
• Animal and dairy science
• Veterinary science
• Agricultural biotechnology
• Social sciences
• Economics and business
• Educational sciences
• Political science
• Social and economic geography
• Media and communications
• History and archaeology
• Languages and literature
• Philosophy, ethics and religion
• Arts, history of arts, performing arts, music

Association "Open Science"

• DSpace@MIT Home

MIT Open Access Articles

The MIT Open Access Articles collection consists of scholarly articles written by MIT-affiliated authors that are made available through DSpace@MIT under the MIT Faculty Open Access Policy, or under related publisher agreements. Articles in this collection generally reflect changes made during peer-review.

Version details are supplied for each paper in the collection:

• Original manuscript: author's manuscript prior to formal peer review
• Author's final manuscript: final author's manuscript post peer review, without publisher's formatting or copy editing
• Final published version: final published article, as it appeared in a journal, conference proceedings, or other formally published context (this version appears here only if allowable under publisher's policy)

Some peer-reviewed scholarly articles are available through other DSpace@MIT collections, such as those for departments, labs, and centers.

If you are an MIT community member who wants to deposit an article into the this collection, you will need to log in to do so. If you don't have an account, please contact us.

More information:

• Working with MIT's open access policy
• Submitting a paper under the policy
• FAQ about the policy

Recent Submissions

The Properties of Whiteness 

High and Dry: Rental Markets After Flooding Disasters 

Spatial structure of workplace and communication between colleagues: A study of E-mail exchange and spatial relatedness on the MIT campus 

Show Statistical Information

Have a language expert improve your writing

Run a free plagiarism check in 10 minutes, generate accurate citations for free.

• Knowledge Base
• Research paper

Writing a Research Paper Introduction | Step-by-Step Guide

Published on September 24, 2022 by Jack Caulfield . Revised on March 27, 2023.

The introduction to a research paper is where you set up your topic and approach for the reader. It has several key goals:

• Present your topic and get the reader interested
• Provide background or summarize existing research
• Position your own approach
• Detail your specific research problem and problem statement
• Give an overview of the paper’s structure

The introduction looks slightly different depending on whether your paper presents the results of original empirical research or constructs an argument by engaging with a variety of sources.

Instantly correct all language mistakes in your text

Upload your document to correct all your mistakes in minutes

Table of contents

Step 1: introduce your topic, step 2: describe the background, step 3: establish your research problem, step 4: specify your objective(s), step 5: map out your paper, research paper introduction examples, frequently asked questions about the research paper introduction.

The first job of the introduction is to tell the reader what your topic is and why it’s interesting or important. This is generally accomplished with a strong opening hook.

The hook is a striking opening sentence that clearly conveys the relevance of your topic. Think of an interesting fact or statistic, a strong statement, a question, or a brief anecdote that will get the reader wondering about your topic.

For example, the following could be an effective hook for an argumentative paper about the environmental impact of cattle farming:

A more empirical paper investigating the relationship of Instagram use with body image issues in adolescent girls might use the following hook:

Don’t feel that your hook necessarily has to be deeply impressive or creative. Clarity and relevance are still more important than catchiness. The key thing is to guide the reader into your topic and situate your ideas.

Don't submit your assignments before you do this

The academic proofreading tool has been trained on 1000s of academic texts. Making it the most accurate and reliable proofreading tool for students. Free citation check included.

Try for free

This part of the introduction differs depending on what approach your paper is taking.

In a more argumentative paper, you’ll explore some general background here. In a more empirical paper, this is the place to review previous research and establish how yours fits in.

Argumentative paper: Background information

After you’ve caught your reader’s attention, specify a bit more, providing context and narrowing down your topic.

Provide only the most relevant background information. The introduction isn’t the place to get too in-depth; if more background is essential to your paper, it can appear in the body .

Empirical paper: Describing previous research

For a paper describing original research, you’ll instead provide an overview of the most relevant research that has already been conducted. This is a sort of miniature literature review —a sketch of the current state of research into your topic, boiled down to a few sentences.

This should be informed by genuine engagement with the literature. Your search can be less extensive than in a full literature review, but a clear sense of the relevant research is crucial to inform your own work.

Begin by establishing the kinds of research that have been done, and end with limitations or gaps in the research that you intend to respond to.

The next step is to clarify how your own research fits in and what problem it addresses.

Argumentative paper: Emphasize importance

In an argumentative research paper, you can simply state the problem you intend to discuss, and what is original or important about your argument.

Empirical paper: Relate to the literature

In an empirical research paper, try to lead into the problem on the basis of your discussion of the literature. Think in terms of these questions:

• What research gap is your work intended to fill?
• What limitations in previous work does it address?
• What contribution to knowledge does it make?

You can make the connection between your problem and the existing research using phrases like the following.

Now you’ll get into the specifics of what you intend to find out or express in your research paper.

The way you frame your research objectives varies. An argumentative paper presents a thesis statement, while an empirical paper generally poses a research question (sometimes with a hypothesis as to the answer).

Argumentative paper: Thesis statement

The thesis statement expresses the position that the rest of the paper will present evidence and arguments for. It can be presented in one or two sentences, and should state your position clearly and directly, without providing specific arguments for it at this point.

Empirical paper: Research question and hypothesis

The research question is the question you want to answer in an empirical research paper.

Present your research question clearly and directly, with a minimum of discussion at this point. The rest of the paper will be taken up with discussing and investigating this question; here you just need to express it.

A research question can be framed either directly or indirectly.

• This study set out to answer the following question: What effects does daily use of Instagram have on the prevalence of body image issues among adolescent girls?
• We investigated the effects of daily Instagram use on the prevalence of body image issues among adolescent girls.

If your research involved testing hypotheses , these should be stated along with your research question. They are usually presented in the past tense, since the hypothesis will already have been tested by the time you are writing up your paper.

For example, the following hypothesis might respond to the research question above:

Prevent plagiarism. Run a free check.

The final part of the introduction is often dedicated to a brief overview of the rest of the paper.

In a paper structured using the standard scientific “introduction, methods, results, discussion” format, this isn’t always necessary. But if your paper is structured in a less predictable way, it’s important to describe the shape of it for the reader.

If included, the overview should be concise, direct, and written in the present tense.

• This paper will first discuss several examples of survey-based research into adolescent social media use, then will go on to …
• This paper first discusses several examples of survey-based research into adolescent social media use, then goes on to …

Full examples of research paper introductions are shown in the tabs below: one for an argumentative paper, the other for an empirical paper.

• Argumentative paper
• Empirical paper

Are cows responsible for climate change? A recent study (RIVM, 2019) shows that cattle farmers account for two thirds of agricultural nitrogen emissions in the Netherlands. These emissions result from nitrogen in manure, which can degrade into ammonia and enter the atmosphere. The study’s calculations show that agriculture is the main source of nitrogen pollution, accounting for 46% of the country’s total emissions. By comparison, road traffic and households are responsible for 6.1% each, the industrial sector for 1%. While efforts are being made to mitigate these emissions, policymakers are reluctant to reckon with the scale of the problem. The approach presented here is a radical one, but commensurate with the issue. This paper argues that the Dutch government must stimulate and subsidize livestock farmers, especially cattle farmers, to transition to sustainable vegetable farming. It first establishes the inadequacy of current mitigation measures, then discusses the various advantages of the results proposed, and finally addresses potential objections to the plan on economic grounds.

The rise of social media has been accompanied by a sharp increase in the prevalence of body image issues among women and girls. This correlation has received significant academic attention: Various empirical studies have been conducted into Facebook usage among adolescent girls (Tiggermann & Slater, 2013; Meier & Gray, 2014). These studies have consistently found that the visual and interactive aspects of the platform have the greatest influence on body image issues. Despite this, highly visual social media (HVSM) such as Instagram have yet to be robustly researched. This paper sets out to address this research gap. We investigated the effects of daily Instagram use on the prevalence of body image issues among adolescent girls. It was hypothesized that daily Instagram use would be associated with an increase in body image concerns and a decrease in self-esteem ratings.

The introduction of a research paper includes several key elements:

• A hook to catch the reader’s interest
• Relevant background on the topic
• Details of your research problem

and your problem statement

• A thesis statement or research question
• Sometimes an overview of the paper

Don’t feel that you have to write the introduction first. The introduction is often one of the last parts of the research paper you’ll write, along with the conclusion.

This is because it can be easier to introduce your paper once you’ve already written the body ; you may not have the clearest idea of your arguments until you’ve written them, and things can change during the writing process .

The way you present your research problem in your introduction varies depending on the nature of your research paper . A research paper that presents a sustained argument will usually encapsulate this argument in a thesis statement .

A research paper designed to present the results of empirical research tends to present a research question that it seeks to answer. It may also include a hypothesis —a prediction that will be confirmed or disproved by your research.

Cite this Scribbr article

If you want to cite this source, you can copy and paste the citation or click the “Cite this Scribbr article” button to automatically add the citation to our free Citation Generator.

Caulfield, J. (2023, March 27). Writing a Research Paper Introduction | Step-by-Step Guide. Scribbr. Retrieved August 21, 2024, from https://www.scribbr.com/research-paper/research-paper-introduction/

Is this article helpful?

Jack Caulfield

Other students also liked, writing strong research questions | criteria & examples, writing a research paper conclusion | step-by-step guide, research paper format | apa, mla, & chicago templates, "i thought ai proofreading was useless but..".

I've been using Scribbr for years now and I know it's a service that won't disappoint. It does a good job spotting mistakes”

access millions of research papers with Paper Panda

So easy to use, such a huge life saver in terms of research and assessments !! have not come across a article i can not, not read thanks to this :D so happy and has made life easier, thank you, thank you, thank you

One of the most useful web extensions I have ever used, Thank you to the girl on Tiktok that recommended it. I hope both sides of her pillow are cold everyday. Thank you to the developers as well. Huge thumbs up.

es muy bueno!!!! y muy útil!!! estoy literalmente llorando de la felicidad porque ahora puedo ver ensayos o artículos que antes necesitaba y no podía, y además es muy fácil de usar muy recomendado

It is soooooo amazing ,easy to use and it works like a charm. Helped me a great deal!! Thank you so much

Works great. Been using it only for a short while, but it didn’t fail yet. It’s also very quick. Downside is that it sometimes downloaded an early version of the paper, not the final published paper.

very helpful in searching scientific articles

way far out from my excecptation, seldom giving comment but i have to shout out for this one !! Super great!!!!!

Why didn't i know this existed years ago this is the best tool for a scholar ever thank you!!!!!!!!!!

Cela me change la vie. C'est juste incroyable de pouvoir accéder à la connaissance sans aucune barrière. L'outil est bluffant, rapide et sûr.

An amazing extension for a researcher.

Makes my research a whole ton easier

I wish I found this earlier. It works perfectly, easy to access any articles

Game Changer for my thesis, thanks so much!

Insanely useful, and it is probably one of the greatest things in 2021.

Muy recomendable. Útil y fácil de usar.

muy fácil de usar

Loving this!!

Fácil de usar y útil para estudiantes

Ứng dụng tuyệt vời cho nghiên cứu khoa học

Great app useful for my research

Thank you so much for making my life easier!!!!!!!!!

A melhor extensão!

“Paywall? What’s that?”

Paperpanda searches the web for pdf s so you don’t have to, i’m here to help, you’ve probably run into this problem – you want to read a paper, but it’s locked behind a paywall. maybe you have access to it through your library or university, maybe it’s available to download for free through an open access portal, maybe the author uploaded a pdf to a website somewhere – but how are you going to find it paperpanda is here to help just click the tiny panda in your toolbar and the panda will run off and find the paper for you., access research papers in one click, save time accessing full-text pdf s with the free paperpanda browser plugin, stop clicking and start reading, stop navigating paywalls, search engines, and logins. paperpanda helps you get that full-text pdf faster.

Free APA Journals ™ Articles

Recently published articles from subdisciplines of psychology covered by more than 90 APA Journals™ publications.

For additional free resources (such as article summaries, podcasts, and more), please visit the Highlights in Psychological Research page.

• Basic / Experimental Psychology
• Clinical Psychology
• Core of Psychology
• Developmental Psychology
• Educational Psychology, School Psychology, and Training
• Forensic Psychology
• Health Psychology & Medicine
• Industrial / Organizational Psychology & Management
• Neuroscience & Cognition
• Social Psychology & Social Processes
• Moving While Black: Intergroup Attitudes Influence Judgments of Speed (PDF, 71KB) Journal of Experimental Psychology: General February 2016 by Andreana C. Kenrick, Stacey Sinclair, Jennifer Richeson, Sara C. Verosky, and Janetta Lun
• Recognition Without Awareness: Encoding and Retrieval Factors (PDF, 116KB) Journal of Experimental Psychology: Learning, Memory, and Cognition September 2015 by Fergus I. M. Craik, Nathan S. Rose, and Nigel Gopie
• The Tip-of-the-Tongue Heuristic: How Tip-of-the-Tongue States Confer Perceptibility on Inaccessible Words (PDF, 91KB) Journal of Experimental Psychology: Learning, Memory, and Cognition September 2015 by Anne M. Cleary and Alexander B. Claxton
• Cognitive Processes in the Breakfast Task: Planning and Monitoring (PDF, 146KB) Canadian Journal of Experimental Psychology / Revue canadienne de psychologie expérimentale September 2015 by Nathan S. Rose, Lin Luo, Ellen Bialystok, Alexandra Hering, Karen Lau, and Fergus I. M. Craik
• Searching for Explanations: How the Internet Inflates Estimates of Internal Knowledge (PDF, 138KB) Journal of Experimental Psychology: General June 2015 by Matthew Fisher, Mariel K. Goddu, and Frank C. Keil
• Client Perceptions of Corrective Experiences in Cognitive Behavioral Therapy and Motivational Interviewing for Generalized Anxiety Disorder: An Exploratory Pilot Study (PDF, 62KB) Journal of Psychotherapy Integration March 2017 by Jasmine Khattra, Lynne Angus, Henny Westra, Christianne Macaulay, Kathrin Moertl, and Michael Constantino
• Attention-Deficit/Hyperactivity Disorder Developmental Trajectories Related to Parental Expressed Emotion (PDF, 160KB) Journal of Abnormal Psychology February 2016 by Erica D. Musser, Sarah L. Karalunas, Nathan Dieckmann, Tara S. Peris, and Joel T. Nigg
• The Integrated Scientist-Practitioner: A New Model for Combining Research and Clinical Practice in Fee-For-Service Settings (PDF, 58KB) Professional Psychology: Research and Practice December 2015 by Jenna T. LeJeune and Jason B. Luoma
• Psychotherapists as Gatekeepers: An Evidence-Based Case Study Highlighting the Role and Process of Letter Writing for Transgender Clients (PDF, 76KB) Psychotherapy September 2015 by Stephanie L. Budge
• Perspectives of Family and Veterans on Family Programs to Support Reintegration of Returning Veterans With Posttraumatic Stress Disorder (PDF, 70KB) Psychological Services August 2015 by Ellen P. Fischer, Michelle D. Sherman, Jean C. McSweeney, Jeffrey M. Pyne, Richard R. Owen, and Lisa B. Dixon
• "So What Are You?": Inappropriate Interview Questions for Psychology Doctoral and Internship Applicants (PDF, 79KB) Training and Education in Professional Psychology May 2015 by Mike C. Parent, Dana A. Weiser, and Andrea McCourt
• Cultural Competence as a Core Emphasis of Psychoanalytic Psychotherapy (PDF, 81KB) Psychoanalytic Psychology April 2015 by Pratyusha Tummala-Narra
• The Role of Gratitude in Spiritual Well-Being in Asymptomatic Heart Failure Patients (PDF, 123KB) Spirituality in Clinical Practice March 2015 by Paul J. Mills, Laura Redwine, Kathleen Wilson, Meredith A. Pung, Kelly Chinh, Barry H. Greenberg, Ottar Lunde, Alan Maisel, Ajit Raisinghani, Alex Wood, and Deepak Chopra
• Nepali Bhutanese Refugees Reap Support Through Community Gardening (PDF, 104KB) International Perspectives in Psychology: Research, Practice, Consultation January 2017 by Monica M. Gerber, Jennifer L. Callahan, Danielle N. Moyer, Melissa L. Connally, Pamela M. Holtz, and Beth M. Janis
• Does Monitoring Goal Progress Promote Goal Attainment? A Meta-Analysis of the Experimental Evidence (PDF, 384KB) Psychological Bulletin February 2016 by Benjamin Harkin, Thomas L. Webb, Betty P. I. Chang, Andrew Prestwich, Mark Conner, Ian Kellar, Yael Benn, and Paschal Sheeran
• Youth Violence: What We Know and What We Need to Know (PDF, 388KB) American Psychologist January 2016 by Brad J. Bushman, Katherine Newman, Sandra L. Calvert, Geraldine Downey, Mark Dredze, Michael Gottfredson, Nina G. Jablonski, Ann S. Masten, Calvin Morrill, Daniel B. Neill, Daniel Romer, and Daniel W. Webster
• Supervenience and Psychiatry: Are Mental Disorders Brain Disorders? (PDF, 113KB) Journal of Theoretical and Philosophical Psychology November 2015 by Charles M. Olbert and Gary J. Gala
• Constructing Psychological Objects: The Rhetoric of Constructs (PDF, 108KB) Journal of Theoretical and Philosophical Psychology November 2015 by Kathleen L. Slaney and Donald A. Garcia
• Expanding Opportunities for Diversity in Positive Psychology: An Examination of Gender, Race, and Ethnicity (PDF, 119KB) Canadian Psychology / Psychologie canadienne August 2015 by Meghana A. Rao and Stewart I. Donaldson
• Racial Microaggression Experiences and Coping Strategies of Black Women in Corporate Leadership (PDF, 132KB) Qualitative Psychology August 2015 by Aisha M. B. Holder, Margo A. Jackson, and Joseph G. Ponterotto
• An Appraisal Theory of Empathy and Other Vicarious Emotional Experiences (PDF, 151KB) Psychological Review July 2015 by Joshua D. Wondra and Phoebe C. Ellsworth
• An Attachment Theoretical Framework for Personality Disorders (PDF, 100KB) Canadian Psychology / Psychologie canadienne May 2015 by Kenneth N. Levy, Benjamin N. Johnson, Tracy L. Clouthier, J. Wesley Scala, and Christina M. Temes
• Emerging Approaches to the Conceptualization and Treatment of Personality Disorder (PDF, 111KB) Canadian Psychology / Psychologie canadienne May 2015 by John F. Clarkin, Kevin B. Meehan, and Mark F. Lenzenweger
• A Complementary Processes Account of the Development of Childhood Amnesia and a Personal Past (PDF, 585KB) Psychological Review April 2015 by Patricia J. Bauer
• Terminal Decline in Well-Being: The Role of Social Orientation (PDF, 238KB) Psychology and Aging March 2016 by Denis Gerstorf, Christiane A. Hoppmann, Corinna E. Löckenhoff, Frank J. Infurna, Jürgen Schupp, Gert G. Wagner, and Nilam Ram
• Student Threat Assessment as a Standard School Safety Practice: Results From a Statewide Implementation Study (PDF, 97KB) School Psychology Quarterly June 2018 by Dewey Cornell, Jennifer L. Maeng, Anna Grace Burnette, Yuane Jia, Francis Huang, Timothy Konold, Pooja Datta, Marisa Malone, and Patrick Meyer
• Can a Learner-Centered Syllabus Change Students’ Perceptions of Student–Professor Rapport and Master Teacher Behaviors? (PDF, 90KB) Scholarship of Teaching and Learning in Psychology September 2016 by Aaron S. Richmond, Jeanne M. Slattery, Nathanael Mitchell, Robin K. Morgan, and Jared Becknell
• Adolescents' Homework Performance in Mathematics and Science: Personal Factors and Teaching Practices (PDF, 170KB) Journal of Educational Psychology November 2015 by Rubén Fernández-Alonso, Javier Suárez-Álvarez, and José Muñiz
• Teacher-Ready Research Review: Clickers (PDF, 55KB) Scholarship of Teaching and Learning in Psychology September 2015 by R. Eric Landrum
• Enhancing Attention and Memory During Video-Recorded Lectures (PDF, 83KB) Scholarship of Teaching and Learning in Psychology March 2015 by Daniel L. Schacter and Karl K. Szpunar
• The Alleged "Ferguson Effect" and Police Willingness to Engage in Community Partnership (PDF, 70KB) Law and Human Behavior February 2016 by Scott E. Wolfe and Justin Nix
• Randomized Controlled Trial of an Internet Cognitive Behavioral Skills-Based Program for Auditory Hallucinations in Persons With Psychosis (PDF, 92KB) Psychiatric Rehabilitation Journal September 2017 by Jennifer D. Gottlieb, Vasudha Gidugu, Mihoko Maru, Miriam C. Tepper, Matthew J. Davis, Jennifer Greenwold, Ruth A. Barron, Brian P. Chiko, and Kim T. Mueser
• Preventing Unemployment and Disability Benefit Receipt Among People With Mental Illness: Evidence Review and Policy Significance (PDF, 134KB) Psychiatric Rehabilitation Journal June 2017 by Bonnie O'Day, Rebecca Kleinman, Benjamin Fischer, Eric Morris, and Crystal Blyler
• Sending Your Grandparents to University Increases Cognitive Reserve: The Tasmanian Healthy Brain Project (PDF, 88KB) Neuropsychology July 2016 by Megan E. Lenehan, Mathew J. Summers, Nichole L. Saunders, Jeffery J. Summers, David D. Ward, Karen Ritchie, and James C. Vickers
• The Foundational Principles as Psychological Lodestars: Theoretical Inspiration and Empirical Direction in Rehabilitation Psychology (PDF, 68KB) Rehabilitation Psychology February 2016 by Dana S. Dunn, Dawn M. Ehde, and Stephen T. Wegener
• Feeling Older and Risk of Hospitalization: Evidence From Three Longitudinal Cohorts (PDF, 55KB) Health Psychology Online First Publication — February 11, 2016 by Yannick Stephan, Angelina R. Sutin, and Antonio Terracciano
• Anger Intensification With Combat-Related PTSD and Depression Comorbidity (PDF, 81KB) Psychological Trauma: Theory, Research, Practice, and Policy January 2016 by Oscar I. Gonzalez, Raymond W. Novaco, Mark A. Reger, and Gregory A. Gahm
• Special Issue on eHealth and mHealth: Challenges and Future Directions for Assessment, Treatment, and Dissemination (PDF, 32KB) Health Psychology December 2015 by Belinda Borrelli and Lee M. Ritterband
• Posttraumatic Growth Among Combat Veterans: A Proposed Developmental Pathway (PDF, 110KB) Psychological Trauma: Theory, Research, Practice, and Policy July 2015 by Sylvia Marotta-Walters, Jaehwa Choi, and Megan Doughty Shaine
• Racial and Sexual Minority Women's Receipt of Medical Assistance to Become Pregnant (PDF, 111KB) Health Psychology June 2015 by Bernadette V. Blanchfield and Charlotte J. Patterson
• An Examination of Generational Stereotypes as a Path Towards Reverse Ageism (PDF, 205KB) The Psychologist-Manager Journal August 2017 By Michelle Raymer, Marissa Reed, Melissa Spiegel, and Radostina K. Purvanova
• Sexual Harassment: Have We Made Any Progress? (PDF, 121KB) Journal of Occupational Health Psychology July 2017 By James Campbell Quick and M. Ann McFadyen
• Multidimensional Suicide Inventory-28 (MSI-28) Within a Sample of Military Basic Trainees: An Examination of Psychometric Properties (PDF, 79KB) Military Psychology November 2015 By Serena Bezdjian, Danielle Burchett, Kristin G. Schneider, Monty T. Baker, and Howard N. Garb
• Cross-Cultural Competence: The Role of Emotion Regulation Ability and Optimism (PDF, 100KB) Military Psychology September 2015 By Bianca C. Trejo, Erin M. Richard, Marinus van Driel, and Daniel P. McDonald
• The Effects of Stress on Prospective Memory: A Systematic Review (PDF, 149KB) Psychology & Neuroscience September 2017 by Martina Piefke and Katharina Glienke
• Don't Aim Too High for Your Kids: Parental Overaspiration Undermines Students' Learning in Mathematics (PDF, 164KB) Journal of Personality and Social Psychology November 2016 by Kou Murayama, Reinhard Pekrun, Masayuki Suzuki, Herbert W. Marsh, and Stephanie Lichtenfeld
• Sex Differences in Sports Interest and Motivation: An Evolutionary Perspective (PDF, 155KB) Evolutionary Behavioral Sciences April 2016 by Robert O. Deaner, Shea M. Balish, and Michael P. Lombardo
• Asian Indian International Students' Trajectories of Depression, Acculturation, and Enculturation (PDF, 210KB) Asian American Journal of Psychology March 2016 By Dhara T. Meghani and Elizabeth A. Harvey
• Cynical Beliefs About Human Nature and Income: Longitudinal and Cross-Cultural Analyses (PDF, 163KB) January 2016 Journal of Personality and Social Psychology by Olga Stavrova and Daniel Ehlebracht
• Annual Review of Asian American Psychology, 2014 (PDF, 384KB) Asian American Journal of Psychology December 2015 By Su Yeong Kim, Yishan Shen, Yang Hou, Kelsey E. Tilton, Linda Juang, and Yijie Wang
• Resilience in the Study of Minority Stress and Health of Sexual and Gender Minorities (PDF, 40KB) Psychology of Sexual Orientation and Gender Diversity September 2015 by Ilan H. Meyer
• Self-Reported Psychopathy and Its Association With Criminal Cognition and Antisocial Behavior in a Sample of University Undergraduates (PDF, 91KB) Canadian Journal of Behavioural Science / Revue canadienne des sciences du comportement July 2015 by Samantha J. Riopka, Richard B. A. Coupland, and Mark E. Olver

Journals Publishing Resource Center

Find resources for writing, reviewing, and editing articles for publishing with APA Journals™.

Visit the resource center

Journals information

• Frequently Asked Questions
• Journal statistics and operations data
• Special Issues
• Email alerts
• Copyright and permissions

Contact APA Publications

arXiv's Accessibility Forum starts next month!

Help | Advanced Search

Computer Science > Artificial Intelligence

Title: the ai scientist: towards fully automated open-ended scientific discovery.

Abstract: One of the grand challenges of artificial general intelligence is developing agents capable of conducting scientific research and discovering new knowledge. While frontier models have already been used as aides to human scientists, e.g. for brainstorming ideas, writing code, or prediction tasks, they still conduct only a small part of the scientific process. This paper presents the first comprehensive framework for fully automatic scientific discovery, enabling frontier large language models to perform research independently and communicate their findings. We introduce The AI Scientist, which generates novel research ideas, writes code, executes experiments, visualizes results, describes its findings by writing a full scientific paper, and then runs a simulated review process for evaluation. In principle, this process can be repeated to iteratively develop ideas in an open-ended fashion, acting like the human scientific community. We demonstrate its versatility by applying it to three distinct subfields of machine learning: diffusion modeling, transformer-based language modeling, and learning dynamics. Each idea is implemented and developed into a full paper at a cost of less than $15 per paper. To evaluate the generated papers, we design and validate an automated reviewer, which we show achieves near-human performance in evaluating paper scores. The AI Scientist can produce papers that exceed the acceptance threshold at a top machine learning conference as judged by our automated reviewer. This approach signifies the beginning of a new era in scientific discovery in machine learning: bringing the transformative benefits of AI agents to the entire research process of AI itself, and taking us closer to a world where endless affordable creativity and innovation can be unleashed on the world's most challenging problems. Our code is open-sourced at this https URL

Submission history

Access paper:.

• Other Formats

References & Citations

• Google Scholar
• Semantic Scholar

BibTeX formatted citation

Bibliographic and Citation Tools

Code, data and media associated with this article, recommenders and search tools.

• Institution

arXivLabs: experimental projects with community collaborators

arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website.

Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them.

Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs .

Notification: View the latest site access restrictions, updates, and resources related to the coronavirus (COVID-19) »

NREL Research Synthesizes Molecular Aggregates for Solar Energy Applications

No molecule stands alone—they need others, at least when it comes to being able to display useful photophysical, electronic, and chemical properties. When individual molecules combine into an aggregate, or a complex of two or more molecules, they become much more than the sum of their individual parts.

Photoactive molecular aggregates, though—complexes of two or more chromophores, which are molecules that absorb light at certain wavelengths, thereby displaying color—go where isolated molecules do not. Due to the favorable interactions between molecules, these aggregates are of interest for biomedical, solar-energy-harvesting, and light-generating technologies. That is because—in natural photosynthesis and in bioinspired technological applications—photoactive aggregates are efficient at energy transfer, the transport of solar energy from one place to another. For instance, in natural photosynthesis, the most widespread energy conversion system on our planet, aggregates efficiently transfer the energy from where the light is absorbed to where it is converted into charges for electricity or chemicals for fuel production.

National Renewable Energy Laboratory (NREL) researchers have synthesized two new compounds and studied how the properties of the individual molecules contribute to the—often unexpected—properties of the larger aggregates. The team synthesized tetracene diacid (Tc-DA) and a dimethyl ester analogue (Tc-DE) designed to prevent intermolecular hydrogen bonding while preserving Tc-DA's core electronics. The results are described in a Journal of the American Chemical Society paper , " Tetracene Diacid Aggregates for Directing Energy Flow toward Triplet Pairs ."

"The goal of this fundamental study was to decipher which molecular properties dictate the eventual emergent properties of the collective ensemble where the whole is greater than the sum of the individual parts, similar to putting seemingly unrelated puzzle pieces together and an unexpected image emerges," said NREL's Justin Johnson, senior scientist. "For molecular-based light harvesting architectures that aim to use unconventional mechanisms to more efficiently use the solar spectrum than typical solar cells, it's the collective properties that determine efficiency."

"Tc-DA was created to exploit intermolecular hydrogen-bonding interactions at semiconductor surfaces to well-ordered monolayers," said NREL's Nicholas Pompetti, postdoctoral researcher. "However, we found that we could control the aggregation of Tc-DA as it approached the surface through solvent and concentration choices. This opened up insights about tetracene-based aggregates and how their size and structure provide promising pathways for their use in light-harvesting applications."

In a given solvent environment, strong intermolecular interactions direct stable and deterministic aggregation. However, strong but uncontrolled interactions might lead to the formation of large aggregates that may weaken solubility. On the other hand, weak interactions spur dissociation with molecules acting as monomers. Fortunately for Tc-DA, the degree of aggregation can be finely controlled, ranging from monomers to stable larger order aggregates by changing concentration or solvent system.

Tetracene and its derivatives are prime candidates for singlet fission (SF), a process that may improve photoconversion efficiency by reducing wasteful heat production and relies on specific molecular dispositions that aggregates can achieve. Researchers used 1 H nuclear magnetic resonance (NMR) spectroscopy, computational modeling, and concentration-dependent optical behavior to investigate the likely aggregate structure of Tc-DA and Tc-DE. Steady-state spectroscopy analysis allowed them to observe absorption behavior and emission profiles of the aggregates. Computational modeling using density functional theory (performed by Kori Smyser and Sandeep Sharma at the University of Colorado Boulder), in combination with the NMR results, informed the researchers of the likely orientation of molecules within an aggregate structure. Researchers then examined the impacts of aggregation on Tc-DA's excited-state dynamics using transient absorption spectroscopy.

"The excited-state dynamics were surprisingly sensitive to crossing a well-defined threshold of concentration, almost like going through a phase transition for a pure material," Johnson said.

As the size and structure of the aggregates are important to light harvesting, researchers systematically varied solvent polarity and concentration in solution to analyze the well-defined tetracene aggregates and their behaviors, including the potentially important singlet fission. The researchers found that noncovalent tetracene-based aggregates beyond a dimer were stabilized at certain solvent polarities and concentrations, rapidly forming charge transfer and multiexcitonic states, which are desirable species for delivering charges (sometimes multiple units) to an electrode or catalyst.

The combination of NMR, computational studies, and spectroscopic results allowed the researchers to describe aggregate structures not often seen in solution-phase polyacenes.

"Controlling the landscape through molecular design and the associated solvent clearly allows us to dictate what the electrons do when they are photoexcited," Johnson said. "Nature uses hydrogen bonds in many types of aggregated architectures to tune energy landscapes in a similar fashion, like funneling water to a reservoir. Bringing such principles to artificial light-harvesting systems with the potential for controlling multiexcitons is a logical pursuit that is leading to interesting consequences."

Learn more about Basic Energy Sciences at NREL and about the U.S. Department of Energy Office of Science Basic Energy Sciences program . Read " Tetracene Diacid Aggregates for Directing Energy Flow toward Triplet Pairs " in the Journal of the American Chemical Society .