Multiple Choice
Which of the following best describes the primary difference between pretest/posttest designs and within-groups designs in developmental research?
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2. Psychology Research
Developmental Designs
Multiple Choice
In developmental research designs, what is a cohort?
A
A single participant who is intensively studied over an extended period in a case study design
B
A research method in which different age groups are compared at one point in time (cross-sectional design)
C
A group of people who share a common characteristic, typically having been born around the same time, and who are studied as they age
D
A variable that the researcher manipulates to determine its effect on a dependent variable in an experiment
Verified step by step guidance1
Step 1: Understand the context of developmental research designs, which study how people change over time.
Step 2: Recognize that a 'cohort' refers to a group of individuals who share a common characteristic, often their birth period.
Step 3: Differentiate a cohort from other research designs, such as case studies (single participant) or cross-sectional designs (different age groups compared at one time).
Step 4: Note that in cohort studies, researchers follow this group over time to observe developmental changes.
Step 5: Conclude that a cohort is best defined as a group of people born around the same time who are studied as they age.
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