Psychology is both a natural science and a social science, and its research methods reflect this dual identity. Some areas of psychology — cognitive neuroscience, behavioral neuroscience, psychophysics — use laboratory methods and biological measurement techniques comparable to those in the natural sciences. Others — social psychology, clinical psychology, developmental psychology — use surveys, interviews, observational methods, and clinical case studies that align more closely with social science traditions. A research paper in psychology might require experimental studies from peer-reviewed journals, government mental health data, clinical practice guidelines, assessment instruments, or meta-analyses synthesizing evidence across hundreds of studies. This guide, part of iResearchNet’s How to Do Research series, covers the databases, data sources, and methodological conventions that U.S. college and university students need for research papers in psychology. For topic ideas, see iResearchNet’s Psychology Research Paper Topics.
Academic Databases for Psychology
PsycINFO
PsycINFO, maintained by the American Psychological Association (APA), is the discipline’s primary database and should be the starting point for any psychology research project. PsycINFO indexes more than five million records — journal articles, books, book chapters, dissertations, and technical reports — covering all areas of psychology and related behavioral and social sciences. It uses a controlled vocabulary (the Thesaurus of Psychological Index Terms) that allows students to search by standardized subject headings rather than relying on keywords that different authors may phrase differently. A student researching the effectiveness of cognitive behavioral therapy for anxiety disorders, for instance, can combine the descriptors “Cognitive Behavior Therapy” and “Anxiety Disorders” to retrieve articles indexed specifically under those terms.
PsycINFO’s record structure includes fields that are particularly useful for psychology research: the methodology field classifies studies by research design (empirical, experimental, quasi-experimental, correlational, longitudinal, qualitative, meta-analysis), the population field identifies the age group and demographic characteristics of participants, and the tests and measures field identifies validated instruments used in the study. These fields allow students to filter results by study type, which is essential for evidence-based reviews and for finding studies that match a specific methodological criterion.
Most U.S. university libraries provide access to PsycINFO through EBSCO, Ovid, or ProQuest. The APA also publishes PsycARTICLES, which provides full-text access to articles published in APA journals and journals from allied organizations, and PsycTests, which provides access to validated psychological tests, measures, and assessment instruments.
Additional Databases
PubMed indexes psychology research that appears in biomedical and neuroscience journals, making it essential for research on biological psychology, neuropsychology, psychopharmacology, and the neuroscience of mental health. ERIC covers educational psychology, school psychology, and counseling in educational settings. Sociological Abstracts covers social psychology topics that intersect with sociology, including group behavior, social identity, and social structure. JSTOR archives complete runs of major psychology journals and is essential for historical and foundational research. Google Scholar provides broad indexing and citation tracking; students should configure Library Links to connect it to their university’s subscriptions.
For preprints and working papers, PsyArXiv is the primary preprint server for psychological science. PsyArXiv papers are freely accessible and represent the most current research in the field, though they have not undergone peer review and their findings should be treated with appropriate caution.
Government and Institutional Data Sources
Several U.S. government agencies produce data directly relevant to psychology research.
The National Institute of Mental Health (NIMH), part of the National Institutes of Health, is the primary federal agency for research on mental disorders. NIMH publishes prevalence data for mental health conditions, funds the largest share of federal mental health research, and maintains data on treatment utilization and mental health services. The Substance Abuse and Mental Health Services Administration (SAMHSA) publishes the annual National Survey on Drug Use and Health (NSDUH), which provides the most detailed national data on substance use, mental health conditions, and treatment access in the United States.
The Centers for Disease Control and Prevention (CDC) provides data relevant to health psychology, developmental psychology, and behavioral health through systems including the Behavioral Risk Factor Surveillance System (BRFSS) and the Youth Risk Behavior Surveillance System (YRBSS). The Bureau of Labor Statistics publishes data on psychologist employment, wages, and occupational projections. The Inter-university Consortium for Political and Social Research (ICPSR) archives psychological datasets, including longitudinal studies of development, aging, and mental health.
For international comparative data, the World Health Organization (WHO) publishes data on the global burden of mental disorders and on mental health service provision across countries.
Major Subfields and Their Research Sources
Psychology’s breadth means that different subfields rely on different databases, data sources, and methodological traditions. Students should identify which subfield their research question falls within and should tailor their search strategy accordingly.
Clinical and counseling psychology research on psychotherapy effectiveness, diagnostic assessment, and mental health treatment draws primarily on PsycINFO, PubMed, and the Cochrane Library. The APA’s Division 12 (Society of Clinical Psychology) maintains a list of empirically supported treatments — psychological interventions that have been demonstrated effective through rigorous research — that is a useful reference for papers on treatment effectiveness.
Developmental psychology research on cognitive, social, emotional, and physical development across the lifespan draws on longitudinal datasets archived at ICPSR and on journals such as Developmental Psychology, Child Development (published by the Society for Research in Child Development), and Psychology and Aging. NICHD (the National Institute of Child Health and Human Development) and NIA (the National Institute on Aging) fund major longitudinal studies whose data are publicly accessible.
Social psychology research on attitudes, persuasion, group behavior, prejudice, and social cognition appears in JPSP, Personality and Social Psychology Bulletin, and Social Psychological and Personality Science. The Society for Personality and Social Psychology (SPSP) hosts an annual conference and maintains resources for researchers. Social psychology has been particularly affected by the replication crisis, and students should pay close attention to sample sizes and replication status when citing social psychology findings.
Cognitive psychology and neuroscience research on perception, attention, memory, language, and decision-making appears in journals such as Journal of Experimental Psychology, Cognition, Cognitive Psychology, and NeuroImage. PubMed is often more useful than PsycINFO for neuroscience topics because the relevant research appears in neuroscience and biomedical journals.
Industrial-organizational (I-O) psychology research on workplace behavior, employee selection, training, motivation, and organizational design appears in the Journal of Applied Psychology, Personnel Psychology, and Organizational Behavior and Human Decision Processes. The Society for Industrial and Organizational Psychology (SIOP) publishes practice guidelines and research summaries.
Forensic psychology research on psychology and the legal system — competency evaluations, eyewitness testimony, risk assessment, jury decision-making — appears in Law and Human Behavior, Psychology, Public Policy, and Law, and Criminal Justice and Behavior. Students researching forensic psychology topics should also consult the criminal justice databases described in iResearchNet’s guide to criminal justice research.
Ethical Standards in Psychology Research
The APA’s Ethical Principles of Psychologists and Code of Conduct governs the professional behavior of psychologists, including standards for research with human participants. The Code requires informed consent, protection of confidentiality, debriefing of participants (particularly when deception has been used), and special protections for vulnerable populations (children, individuals with cognitive impairments, prisoners). Any original research conducted by students that involves human participants requires IRB approval or exemption, as discussed in iResearchNet’s guide to original research.
Students should also be aware of the ethical dimensions of how they use and report research in their papers. Accurately representing others’ findings, citing sources appropriately, and avoiding plagiarism are ethical obligations of academic writing. The APA’s ethical standards on scientific misconduct — including fabrication, falsification, and plagiarism — apply to student work as well as to professional researchers.
Clinical Practice Guidelines and Evidence-Based Treatment
For research papers on clinical topics — psychotherapy effectiveness, treatment of specific disorders, or mental health service delivery — clinical practice guidelines provide authoritative evidence-based recommendations. The APA publishes clinical practice guidelines on specific conditions (e.g., PTSD, depression, obesity), each based on systematic reviews of the treatment literature. The National Institute for Health and Care Excellence (NICE) publishes guidelines on mental health conditions that are widely referenced in U.S. clinical training. The Cochrane Library provides systematic reviews of psychological interventions.
The APA’s Division 12 website lists treatments with strong, modest, or controversial research support, organized by disorder — this resource is particularly useful for students writing papers that compare the evidence base for different therapeutic approaches.
Research Methods in Psychology
Psychology uses a wide range of research methods, and understanding the strengths and limitations of each design is essential for evaluating the sources cited in a research paper.
Experimental Methods
The experiment is the gold standard for establishing causal relationships in psychology. In a true experiment, the researcher randomly assigns participants to conditions (at minimum, a treatment group and a control group), manipulates one or more independent variables, and measures the effect on one or more dependent variables. Random assignment ensures that the groups are equivalent at the outset, so that any difference in outcomes can be attributed to the manipulation rather than to pre-existing differences between participants. Laboratory experiments offer maximum control over extraneous variables; field experiments sacrifice some control in exchange for greater ecological validity (the degree to which findings generalize to real-world settings).
Correlational and Quasi-Experimental Designs
When random assignment is not ethical or practical — studying the effects of childhood trauma, for instance, requires observing naturally occurring variation rather than assigning children to traumatic conditions — researchers use correlational and quasi-experimental designs. Correlational studies measure the association between variables without manipulating them. Quasi-experimental studies compare groups that differ on a variable of interest (such as comparing students in schools that adopted a program to those in schools that did not) without random assignment. Both designs can identify relationships between variables, but they cannot establish causation with the same confidence as true experiments, because unmeasured confounding variables may account for the observed associations.
Longitudinal and Cross-Sectional Designs
Developmental psychology and lifespan research frequently use longitudinal designs (following the same participants over months, years, or decades) and cross-sectional designs (comparing different age groups at a single point in time). Each has trade-offs: longitudinal designs can track individual change over time but are expensive, time-consuming, and subject to participant attrition; cross-sectional designs are efficient but cannot distinguish developmental change from cohort effects (differences between generations rather than differences caused by aging).
Qualitative Methods
Qualitative methods — in-depth interviews, focus groups, thematic analysis, grounded theory, and phenomenological analysis — are widely used in clinical psychology, counseling psychology, community psychology, and health psychology. Qualitative studies address questions about how people experience, interpret, and make meaning of psychological phenomena — questions that quantitative methods, with their focus on measurement and statistical patterns, are not designed to answer. Journals such as Qualitative Psychology (APA), Qualitative Research in Psychology, and Psychology of Women Quarterly regularly publish qualitative studies. Students writing qualitative psychology papers should describe their methodology, explain their sampling and data collection procedures, and demonstrate rigor through strategies such as reflexivity, member checking, and triangulation.
Meta-Analysis
Meta-analysis — a statistical technique for combining the results of multiple studies to estimate an overall effect size — has become one of the most influential methodological tools in psychology. A meta-analysis of the effectiveness of psychotherapy for depression, for example, combines the results of dozens or hundreds of individual treatment studies to produce a single summary estimate of therapy’s effect. Meta-analyses are published in major psychology journals and in the Cochrane Library (for clinical interventions). Students should be aware that meta-analyses are secondary analyses of existing studies, not primary research, and their quality depends on the quality and representativeness of the studies they include.
The Replication Crisis and Open Science
Psychology has been at the center of a discipline-wide reckoning with the reliability of published research findings. The replication crisis — prompted by high-profile failures to reproduce well-known experimental results — has revealed that some published findings may be less reliable than the field previously assumed. Contributing factors include small sample sizes, questionable research practices (such as selectively reporting significant results while omitting non-significant ones), publication bias (journals’ preference for publishing positive results over null results), and insufficient methodological transparency.
In response, the field has adopted a set of practices collectively known as open science. Preregistration — publicly committing to a study’s hypotheses, methods, and analysis plan before data collection begins — prevents researchers from adjusting their analyses after seeing the results. Open data and open materials — making datasets and research materials publicly available — allows other researchers to verify findings and conduct replication studies. Registered Reports — a publication format in which journals review and accept studies based on their methods before results are known — eliminates publication bias by ensuring that well-designed studies are published regardless of whether they produce significant results.
The Center for Open Science (COS) maintains the Open Science Framework (OSF), a platform for preregistration, data sharing, and collaborative research. Students writing psychology research papers should be aware of these developments and should consider the replication status and methodological transparency of the studies they cite. A study that has been preregistered, uses an adequate sample size, and makes its data publicly available provides stronger evidence than one that does not.
Key Journals in Psychology
The leading general-interest psychology journals include Psychological Bulletin (publishes review articles and meta-analyses), Psychological Review (publishes theoretical articles), Psychological Science (the flagship journal of the Association for Psychological Science), and the American Psychologist (publishes broad-interest articles on the science and practice of psychology).
Subfield journals cover the discipline’s major areas. Journal of Personality and Social Psychology (JPSP) is the top journal in social and personality psychology. Developmental Psychology covers lifespan development. Journal of Abnormal Psychology (now Journal of Psychopathology and Clinical Science) covers psychopathology. Journal of Experimental Psychology: General, Learning, Memory, and Cognition, and Human Perception and Performance cover cognitive and experimental psychology. Journal of Consulting and Clinical Psychology covers psychotherapy and clinical intervention research. Health Psychology covers behavioral medicine and health behavior. Journal of Educational Psychology covers learning, instruction, and educational assessment. Neuropsychology covers brain-behavior relationships.
The Annual Review of Psychology publishes authoritative review articles that synthesize the state of knowledge on major topics — these reviews are excellent starting points for students entering an unfamiliar area of psychology.
Citation and Writing Conventions
Psychology uses APA style (American Psychological Association), currently in its seventh edition. APA style uses author-date in-text citations and a References list at the end of the paper. Psychology research papers typically follow the IMRAD structure: Introduction (stating the research question, reviewing relevant literature, and presenting hypotheses), Method (describing participants, materials, and procedures in sufficient detail for replication), Results (reporting statistical analyses and findings), and Discussion (interpreting findings, acknowledging limitations, and suggesting directions for future research).
APA style places particular emphasis on reporting statistical results completely and accurately. Effect sizes, confidence intervals, exact p-values, and sample sizes should be reported for all statistical tests. The APA Style website and the Publication Manual provide detailed guidance on formatting, citation, and statistical reporting.
Professional Associations
The American Psychological Association (APA) is the largest professional organization for psychologists in the United States, publishing more than 90 journals, maintaining PsycINFO and related databases, and hosting an annual convention. The Association for Psychological Science (APS) focuses on scientific psychology and publishes Psychological Science, Current Directions in Psychological Science, Perspectives on Psychological Science, and Psychological Science in the Public Interest. Both organizations offer student membership at reduced rates.
Numerous specialty organizations serve particular subfields: the Society for Personality and Social Psychology (SPSP), the Society for Research in Child Development (SRCD), the Society of Clinical Psychology (APA Division 12), the Society for Industrial and Organizational Psychology (SIOP), and many others publish specialized journals and host conferences that provide access to the most current research in their areas.
Frequently Asked Questions
What is the best database for psychology research?
PsycINFO is the field’s primary database and should be the starting point for any psychology research project. For neuroscience and biological psychology topics, PubMed complements PsycINFO with deeper biomedical coverage. For preprints, PsyArXiv provides the most current research. For meta-analyses of clinical interventions, the Cochrane Library should be consulted. Google Scholar provides useful citation tracking across all subfields.
How do I find validated psychological tests and measures?
PsycTests (APA) provides access to thousands of validated tests, scales, and assessment instruments, including reliability and validity information. PsycINFO’s “Tests and Measures” field identifies instruments used in indexed studies, and searching for the name of a specific instrument in PsycINFO will retrieve studies that have used it. The Mental Measurements Yearbook (available through university libraries as the Buros Center database) provides independent reviews of commercially published tests.
What is the difference between a literature review and a meta-analysis?
A literature review synthesizes existing research narratively — describing and evaluating studies, identifying themes and gaps, and constructing an argument about the state of knowledge on a topic. A meta-analysis synthesizes existing research statistically — extracting effect sizes from individual studies and combining them using statistical techniques to produce a pooled estimate of the overall effect. Both are secondary analyses (they analyze existing studies rather than collecting new data), but meta-analyses produce quantitative summaries while literature reviews produce qualitative syntheses. Many psychology research papers include a literature review section; meta-analyses are standalone studies published as separate articles.
How important is the replication crisis for my research paper?
The replication crisis is relevant to any psychology research paper because it affects how students should evaluate the credibility of the sources they cite. Students should consider whether the studies they cite used adequate sample sizes, whether the findings have been replicated, whether the study was preregistered, and whether the data and materials are publicly available. Citing studies with strong methodological transparency — particularly preregistered studies and large-sample replications — strengthens the paper’s evidentiary foundation. When citing findings that have not been replicated or that come from small-sample studies, students should note these limitations.
Related Pages
- How to Do Research — Overview of research methods and discipline-specific guides
- How to Do Research on Health and Medicine — PubMed, CDC data, and medical research sources
- How to Do Research on Education — ERIC, NCES, and education research sources
- Psychology Research Paper Topics — Topic ideas for psychology research papers
- How to Write a Research Paper — Complete step-by-step guide