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Explore the scientific study of mind and behavior, research strategies, ethics, biases, data collection methods, and statistical analysis in psychology.
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PSYCO 105: Individual and Social Behaviour Lecture 1: The Ways and Means of Psychology
What is psychology? • Psychology is the scientific study of the mind and behaviour • The scientific study of the causes of behaviour; also the application of the findings of psychological research to the solution of problems (Carlson et al., 2000)
Fields of Psychology • Biological Foundations • Individual and Social Behaviour • Applied Psychology
Biological Foundations • Physiological Psychology • Psychophysiology • Comparative Psychology • Behaviour Analysis • Behaviour Genetics • Cognitive Psychology • Experimental Neuropsychology
Individual and Social Behaviour • Developmental Psychology • Social Psychology • Personality Psychology • Cross-Cultural Psychology • Clinical Psychology
Applied Psychology • Organizational Psychology • Educational Psychology • Health Psychology • Community Psychology • Engineering Psychology (Human Factors)
Ways of Knowing • Tenacity (Faith) • Authority • Consensus • Reason • Observation
Goals of Psychology To “understand” human behaviour • Describe • Explain • Predict • Control
Research Strategies • Experimentation • Correlational Studies • Descriptive Studies
Independent Variable The factor that is systematically manipulated so that the researcher can examine its effect on a dependent variable. Dependent Variable The variable (usually a behaviour) that is affected by the independent variable. Experimentation
Research Settings • Laboratory Studies • Field Studies
Data Collection Methods • Self-Report • Questionnaires • Interviews • Observational Methods • Naturalistic Observation • Participant Observation • Tests
Ethics • Informed Consent • Risks and Benefits • Deception • Privacy, Confidentiality, and Anonymity • Special Groups
Informed Consent • A description of the study should be provided in advance, including mention of: the purpose of the research; expected benefits of the research; methods (tasks to be performed); any effects, risks or inconveniences of the procedure; rights of the participant; and any possible alternative procedures.
Risks and Benefits • The onus is on the researcher to avid or minimize risks to the subjects, both in carrying out the research and in publication of the results.
Deception • Deception is a situation in which subjects have essential information withheld and/or are intentionally misled about procedures and purposes. A thorough debriefing is particularly important in studies involving deception.
Privacy, Confidentiality and Anonymity • Personal information given by the subject will be confidential. Wherever possible, the researcher will take steps to ensure the anonymity of the subjects.
Vulnerable Groups • Special care must be taken with vulnerable groups to ensure ethical treatment (e.g., prisoners, people with mental disabilities, other cultures, etc.)
Bias in Psychological Research • Random Error • Causes random variability in DV • Systematic Error or Bias • Causes nonrandom variability in DV other than that caused by the IV.
Types of Bias • Sample Bias • Measurement Bias • Observer’s (Researcher’s) Bias • Subject’s Bias
Sample Biases Random assignment Measurement Biases Validity Reliability Sample and Measurement Biases
Observer-Expectancy Effects Single-blind studies Subject-Expectancy Effects Double-blind studies Placebo Observer’s and Subject’s Biases
Descriptive Statistics • Central Tendency • Mean • Median • Variability • Standard deviation
Assessing Relations • Correlation Coefficient • A measurement of the degree to which two variables are related. • Scatterplot • A graphic representation of a correlation; one value is plotted against the horizontal axis and the other against the vertical axis.
Inferential Statistics • Statistical Significance • The likelihood that an observed relation or difference between two variables is not due to chance factors