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Research Methods Chapter 10

Terms in this set (20)

behavioral diary
a self-report data collection strategy where individuals record their behaviors and associated feelings as they occur
pretest-posttest design
a within-subjects design where participants are measured before and after exposure to a treatment or intervention
baseline measurement
The initial assessment of a participant at the onset of a study, prior to any intervention or treatment
repeated measures design
A within-subjects experimental paradigm in which each participant receives every level of the independent variable and is measured following each level of the independent variable.
longitudinal design
research design in which one participant or group of participants is studied over a long period of time
attrition (mortality)
the differential dropping out of participants from a study
testing effect
a threat to the internal validity of a study where participants' scores may change on subsequent measurements simply because of their increased familiarity with the instrument
instrumentation
a threat to internal validity due to changes in how a variable is measured during the course of a study
history
a threat to internal validity due to an external event potentially influencing participants' behavior during the study
maturation
a threat to internal validity that occurs; physiological changes occurring in participants during the course of the study
order effect
a threat to internal validity in a within-subjects design resulting from influence that the sequence of experimental conditions can have on the dependent variable
practice effect
changes in a participant's responses or behavior due to increased experience with the measurement instrument, not the variable under investigation
fatigue effect
deterioration in quality of measurements due to participants becoming tired, less attentive, or careless during the course of the study
carryover effect
exposure to earlier experimental conditions influencing responses to subsequent conditions
sensitization effect
continued exposure to experimental conditions in a within-subjects study increasing the likelihood of hypothesis-guessing, potentially influencing participants' responses in later experimental conditions
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