PSYC*3140 Lecture Notes - Lecture 4: Psychopathy, Confounding, Statistical Significance
Document Summary
Hypothesis: created to make sense of phenomena and then tested: educated guess about world, worded in unambiguous form, testability. Internal/external validity: confounding variable: factor making results uninterpretable, control group: people in experimental group not exposed to iv, randomization, analogue models. Statistical vs clinical significance: statistical significance, clinical significance, effect size. Average client: patient uniformity myth: individual differences among people with same disorder. Internal validity: confounds, control, coincidences occur: not relevant to condition under study. Incidence = estimated # of new cases during a specific period: prevalence = # of people with disorder at one time. Control groups = not exposed ot iv: placebo effect = change in behaviour due to expectation , placebo control groups = control groups getting placebo, double-blind control = participants and researchers unaware of placebo. Important issues to consider: effects of interventions lead to more powerful treatments, outcome = positive and negative effects of treatment. Systematic study of individuals under different experimental conditions.
