PSY 12000 Chapter Notes - Chapter 2: Internal Validity, Informed Consent, Statistical Inference
Document Summary
Sometimes you cannot just sit there to observer; can cause reactivity (behavior changed by observation) consequences: loss of external validity (how results generalize to all situations/real life and improve with multiple observations) Naturalistic observation: only natural behavior not lab behavior. Cannot interfere and must represent real life; decreased reactivity with indirect measure of results of behavior verifies results from lab (ie: sensecams) Case study: descriptive technique for single case (usually individual) which gives important historical background to help form hypothesis. Limitations include if there is external validity, and how to verify. Survey: descriptive technique for limited amounts of information from increased number people; usually a questionnaire. Research basis or opinion; need random sample (target population has equal likelihood of being selected to take out bias) Psychological tests designed to measure differences among people/tendencies to act a certain way (answers the fundamental quests about behavior and mind) Measure of central tendency/value where scores cluster.
