PSYC 3520 Chapter Notes - Chapter 2: Birth Weight, Random Assignment, Advanced Maternal Age
14 Feb 2017
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Document Summary
Narrative record: detailed description of the behaviours they observe. Event sampling: small # of behaviours are identified and the researcher notes each time they occur. Operational definitions reduce observer bias (when researcher"s expectations influence the way they record or interpret) Ethnographic research: researchers make detailed observations or conduct interviews in everyday settings. Influence of iv on dv: tools and equipment can be hidden, easier to study behaviours that occur infrequently in the natural environement. Internal validity: the degree to which differences in the dependant variable are caused by differences in the internal variable. External validity: the degree to which the findings can be generalized. Baby biography: observational records of the infant"s development. Similar to case study only manipulation or intervention is used. More control and internal validity than a case study. Researcher may be biased when interpreting data. Used to investigate pre-existing group variable (demographics: culture, race, age, ethnicity, gender etc.
