araştırıyorum.learn
TREN
Learning paths / Examine a claim of change
Learn step by step · Advanced

Examine a claim of change

Examine changes over time through attrition, measurement and causality.

7 concepts17 minutes

01

Longitudinal study

2 min · Track change through repeated measurements.
02

Missing data

2 min · Distinguish absent values from meaningful answers.
03

Selection bias

2 min · Who enters a study can systematically distort its result.
04

Operational definition

2 min · Specify how an abstract idea will be measured.
05

Correlation

3 min · Changing together does not mean causing each other.
06

Confounder

3 min · A common cause that can distort an association.
07

Effect size

3 min · Express how large a difference or relationship is.
Advanced

Think through a case

A university follows 200 students before a new shuttle route. Only 120 participate in the final measurement. Satisfaction rises, but teaching schedules also change during the same period.

Answer three questions about the scenario below.

1 / 3

True or false?

Examining the experiences of those missing at follow-up helps interpretation.

Revisit a related concept ↗

2 / 3

True or false?

Higher satisfaction after the shuttle opens proves the shuttle alone caused it.

Revisit a related concept ↗

3 / 3

True or false?

Check whether question wording and response scales stayed consistent across measurements.

Revisit a related concept ↗
Practice what you learned

Put this learning path into practice.

Choose a guide connected to the concepts in this path. These optional activities do not count towards your reading progress.