Longitudinal studies Flashcards

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1
Q

What are longitudinal studies

A

This is an investigation that follows a group of participants overtime.

The researchers are interested in how variables change over time.

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2
Q

What is a cohort

A

A group of subjects selected at the same time/age and tested at different times

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3
Q

Strengths of longitudinal studies

A

1) Can be used to investigate constructs / variables that change overtime •

2) Can be used to track the long term effectiveness of interventions using follow-up sessions .

3) They retest the same individuals this means that the researcher can be sure that differences are not due to participant variables.

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4
Q

Weaknesses of longitudinal studies

A

Sample attrition- because longitudinal studies last for a long time the sample is likely to fall. Due to moving locations , death , boredom.

Low generalisability -> When you lose your ss to attrition, the small sample size becomer less representative of the diversities of the general population.

Low reliability - measures used in longitudinal studies are not standardised as they may need to be improved overtime to remain relevant to the ss.

Low objectivity -> researchers may develop relationships with the ss, lowering their objectivity.

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