Simplify the Following

question 145

Multiple Choice

Simplify the following:

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Definitions:

Time-Series Designs

Research designs that involve repeated measurements of dependent variables over time, both before and after a treatment or intervention, to assess change.

Selection Effects

Biases introduced into research when the participants or subjects are not randomly assigned, potentially leading to unrepresentative samples and skewed results.

Observations

The process of closely monitoring, recording, or noticing specific behaviors, actions, or phenomena, typically as a data collection method in research.

Cohort Design

A research design that follows a group (cohort) of individuals over time to study changes and outcomes, often used in epidemiology and social sciences.