In the scientific method, an experiment (Latin: ex-+-periri, "of (or from) trying"), is a set of actions and observations, performed in the context of solving a particular problem or question, to support or falsify a hypothesis or research concerning phenomena. The experiment is a cornerstone in the empirical approach to acquiring deeper knowledge about the physical world.
Experiments conducted in accord with the scientific method have several features in common. The design of experiments attempts to balance the requirements and limitations of the field of science in which one works so that the experiment can provide the best conclusion about the hypothesis being tested.
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Research Methods :: Psychology

Intersex Conditions - This experiment is a short survey designed to assess individual attitudes towards Transsexuals and Intersex conditions.
A Web of Research - An APA Monitor on Psychology article that discusses the advantages and validity of online experiments.
Meta Description: [ APA Monitor (Apr 2000) article discusses the advantages and disadvantages that a number of psychologists face when using the Web to run studies and experiments. ]
Academic Computing Online Surveys - Questionnaire studies from an academic computing department about the use of computers by professional academics.
Anthony Little's Lab - Several online studies about mate preference, as well as information about mate-choice research.
Bem Sex Role Inventory - A short survey to check the validity of items in the BSRI. Takes between 5 and 10 minutes to complete.
Brand Personality Experiment - Do people choose brands primarily because they match their own personality? This interesting, easy to complete experiment taking about 10 minutes tries to explore how people evaluate and choose brands.
Causal Reasoning Survey System - A list of studies or games on how people make judgments and reason about everyday events.
Cognitive Neuropsychology Experiment Site - Participate in online psychology experiments about cognitive neuropsychology.
Meta Description: [ research brain laterality asymmetry biopsychology participate ]
Cognitive Spatial Abilities - An online experiment to test gender differences in spatial awareness by testing estimations of arrival time of a virtual UFO in a simulated 3d environment.
Columbia University Online Survey of Eating Behaviors - Our eating habits and self image have a great deal to do with health and happiness. We want to understand how eating behavior and body image change across the lifespan and influence wellbeing. We hope that you can contribute to this effort.
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Communication of Health Risk - Examines your response to information about health risks. From the University of Cambridge.
Meta Description: [ Interactive psychology experiment from the University of Cambridge, examining people's perceptions of their risks of developing health problems. ]
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Criminal Trial: Research on juror decision making - Read the court transcript. Examine the evidence. Then take the survey and submit your verdict. (November 2005 - May 2006). This study takes about 30 minutes to complete.
dopox.com - Dopox.com is a site dedicated to the advancement of scientific psychology for student researchers by encouraging students in the development and application of psychology experiments on the Internet.
Meta Description: [ Create, Collaborate, Participate - DOPOX.com, the online home of psychology research tools for students. ]
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Edinburgh-Southampton Social Psychology Web-lab - We are running a series of social psychological studies on this website. In our current study, we are interested in how people evaluate a number of gender-related policy proposals.
Meta Description: [ Cambridge-Southampton Social Psychology Web-lab. ]
Face Research: Studying how we perceive people - Participate in short, frequently-updated experiments about the traits people find attractive in faces and voices, find out how you compare to others, and learn more about the psychology of attractiveness.
Meta Description: [ Psychology experiments about preferences for faces and voices ]
Graphological analysis (at the moment) - Three Personality Tests: Analyze your Signature Test, The Tree Test and The Rubric Test.
Meta Description: [ DESCUBRE TU PERSONALIDAD - Estudiamos los múltiples aspectos de la personalidad por medio de la escritura y otros tests. Se considera un test proyectivo natural , pero muy amplio ya que los datos psicológicos de la personalidad que obtenemos son múltiples y variados, y pocos tests proyectivos ... ]
Implicit Association Test - Demonstrates public-private and conscious-unconscious divergences.
Internet-Based Experiments - Selection of reaction time experiments from the Universität der Bundeswehr. Some tests in German only.
iPsychExpts - Web Experiments for Psychologists - Creates and hosts web experiments for psychologists who are conducting psychological research or are teaching psychology.
Meta Description: [ Hosts and creates web experiments for psychological research. ]
Jouve Testing - Online experiments used to provide psychometric data for the development of professional psychological and ability tests.
Macquarie University Psychology Department Online Research - Online surveys and psychological experiments conducted by the staff and students of the Psychology Department at Macquarie University.
Meta Description: [ web survey questionnaire ]
Manyitems Survey Portal - Brief psychological surveys and experiments in which volunteers can participate. Studies change regularly.
Meta Description: [ Where psychology researchers post brief questionnaires for survey volunteers to complete. ]
Matthew Rongey's Science Project - This is the website for my high school behavioral sciences science fair project. It also has an online community and blog about the experiment.
Moral Sense Test - Tests moral intuitions.
NeuroMod: Memory Psychology - Contains a memory improvement course and two tests; the Daily News Memory Test and the Galton-Crovitz test. Associated with the University of Amsterdam.
Meta Description: [ Memory psychology for a general audience: memory improvement and memory tests. Geheugenpsychologie voor een breed publiek: geheugenverbetering en geheugentests. ]
Online Experiments at the Stanford Linguistics Department - A series of online experiments on different languages, designed by students and faculty at the Stanford University Linguistics Department.
Online psychological tests - A list of online psychological tests in Russian.
Meta Description: [ Смайлов.org.ua: психологические тесты, блог баянов, PHP скрипты, обзоры сайтов ]
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Online Surveys at UCLA - Online social psychology studies by the faculty and students at the University of California, Los Angeles.
Online Test for Right Brain and Left Brain Usage - Online Test for Righ tBrain and Left Brain Usage. Japanese language only.
Opinions on the Social World - A study by a research team at the University of Michigan that investigates how different types of people view the social world. The study takes about 5-10 minutes to complete.
Perceptions of Doctors - The purpose of this research is to study and gather information on people's views of doctors. In order to gather information about this topic, participants are being asked how they would describe doctors based on supplied adjectives. Participants must be over 18 years of age to participate.
Physical Attractiveness Experiments - A series of experiments on judgements of physical attractiveness.
Meta Description: [ evolutionary psychology physical attractiveness facial beauty face perception online experiments personality female faces male pictures WHR BMI hair color mate choice sexual contest pageant ]
PsychExperiments - Classic and new studies. Allows instructors to download the data from their class.
Psychological Research on the Net - A listing of online experiments. Organized by topic.
Psychology and Law Laboratory for Web-based Studies - A list of current and past studies involving legal issues.
Psychology Research Blog - Use of the Internet to Conduct Surveys and/or Experiments - A short article that discusses the limitations of online experiments.
Psychology Tutorials and Demonstrations - Links to online experiments in a variety of fields of psychology
Reips (2002) - Standards for Internet-Based Experimenting - A published journal article that discusses the methodological issues involved in conducting online experiments.
Relationship Surveys - Three anonymous surveys concerning relationship. Each survey takes about 15 to 20 mintues to complete and feedback is provided if requested.
Meta Description: [ Take a variety of online surveys that give you feedback on your relationship and your personality. ]
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Relationship Views Study - A 15 minute experiment that involves a visualization task and answering questionnaires. Requires Java 1.5 or higher.
Sexual Thoughts and Behaviours Study - A completely anonymous and confidential online study for men age 18 to 90: conducted by the Institute of Psychological Sciences, University of Leeds, UK.
Social Psychology Research at USC - Several social psychology online experiments at the University of Southern California. Most open to U.S. residents only.
son Perception Study - An online experiment about how people rate others on a number of dimensions.
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Survey on Parental Rules - 10-minute survey on freedoms and limitations placed by parents on children; participants should be parents with at least one child age 5-17.
Test on reactions to other people's emotions - 10-15 min questionnaire on empathy (available in English and German). Detailed feedback on personal results is offered.
The Accuracy of Memory - This is an online study involving memory. Participation in the study should be no more then ten minutes. Looking at pictures and answering questions.
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The Cannabis Experience and Everyday Functioning Survey - Survey looking at impact of cannabis (marijuana, hash) use on cognitive and psychological aspects of everyday functioning
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The Concept of Intentional Action - A series of online experiments designed to probe people's tacit understanding of intentional action.
The Perception Lab - Participate in frequently-updated psychology experiments about how people perceive personality characteristics in faces.
The Web Experiment List - A list of online experiments.
UCI Cognitive Science Experiments - Experiments involving memory for Chinese characters, as well as English words and images.
Meta Description: [ online psychology experiment involving alien mind reading testing causal learning and inference. ]
UCSD Attention and Perception Lab - Online psychology experiments and surveys at the University of California, San Diego, Attention and Perception Lab.
Meta Description: [ Current online experiments and surveys from the UCSD Attention and Perception Lab, participants are entered in drawings for prizes. ]
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Understanding Everyday Objects - A study about how people process descriptions of familiar objects, conducted at the University of Cambridge.
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We-by-JirO! Interactive CyberLab for Web Experiments - A series of experiments in both Japanese and English.
Meta Description: [ Decision Making and Emotion, and Psychological Experiments on the Web,
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Web Experimental Psychology Lab - University of Zürich's large collection of online experiments going back to 1995.
What turns you on? - A research experiment on sexual attraction and human mate selection.
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Women's Perceptions of Romantic Partner - 15 minute survey studying women's perception on choosing their romantic partners and environments. Women only.
Work Survey - A York University study on work behaviors and attitudes. Open to everyone who is employed either part-time or full-time.
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