Questions And Answers
2026/2027|100% Correct
Correlational/descriptive studies - ANSWER>no intervention/treatment; you are interested in
understanding the development of a naturally occurring phenomenon or relationships between
phenomena
Experimental studies - ANSWER>a procedure used in the service of testing a hypothesis derived from
theory in order to support or disprove it; introduction of treatment or intervention of a stimulus; can be
replicable
Diagramming an experimental study - ANSWER>O=observation
X=intervention
R=random assignment
N=non-equivalent groups
, Classic experimental design - ANSWER>RO1XO2
RO1 O2-Control group
treatment as usual experimental study - ANSWER>RO1XaO2
RO1XbO2
Xa=new treatment
Xb=standard treatment
wait-list control design - ANSWER>RO1XaO2
RO1 O2XaO3
Random assignment - ANSWER>used in rigorous experimental designs-dividing the sample into 2 or
more probabilistically similar groups to address concerns about internal validity. Convenience sample
random selection - ANSWER>a sampling strategy typically used for survey studies (non-experimental)
that is concerned with external validity-purpose is to generate a sample that represents the larger pop.