PSYC 1001 Lecture Notes - Lecture 4: Blind Experiment, Observer-Expectancy Effect
10 Aug 2016
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Make sure you will get the same result each time you measure someone (ex: weight) Ex: self-esteem score for questionnaire should give the same results in back to back days with same participants. Getting the same result through different research study, is reliability of research. Ex: measure aggression in experiment, or self-report in survey, ask 3rd party to assess the subject, or even assess any physiological response to stimulus. Experimenter bias: the experimenter will sometimes unknowingly lean to agree with his hypotheses during his collection of data. Placebo effect: subjects will report improvement when there really isn"t any. Single blind: subject doesn"t know what they"re getting. They don"t know the research and the treatments. Double blind: researcher and subject don"t know which group they are in. Drawing conclusions from lab setting to real world. Want to know if two things are co related. Closer to -1 or +1 the stronger the correlation is.
