Chapter 1 - research Flashcards
IV
What is manipulated/changed?
DV
How is it (IV) measured?
EV
An unexpected variable that may unwontedly influence the DV/results.
Control group
Not exposed to IV
Experimental group
Exposed to IV
Participant selection - random sampling
Every member of population has an even chance at being selected.
Participant selection - convenience sampling
Selecting using the quickest and easiest means possible - most convenient.
Participant selection - convenience sampling
Selecting using the quickest and easiest means possible - most convenient.
Participant selection - stratified sampling
Population is divided into groups based on relevant characteristics and participants are selected from each groups in relevant proportion to experiment.
Sample
Subgroup of population - group that is experimented on.
Population
Group of interest to the study, from which the sample is drawn.
Experimental designs - matched participants
Same participants are in every condition of experiment.
Experimental designs - independent groups
Participants are split into two or more groups (typically control and experiment but not always).
Experimental designs - repeated measures
Participants are paired based on relevant characteristics where one is exposed toon condition and the other to the other.
Quantitive data
Data concerning numerical amounts and expressed numerically.