Distinguish association from a cause
Distinguish association from a cause
About 18 minutes, plus any extended practice
Supplied materials
- Paper or a text document; all cases below are original fictional learning inputs.
- An adult may read aloud; drawing or spoken answers are valid. No personal health information or physical performance is required.
- The fictional workshop attendees volunteer, while nonattendees choose not to join. Attendees later score higher on a source-identification task. The difference is an association; prior skill, access or motivation could differ between groups. Random assignment with comparable testing would strengthen a causal design, but this supplied study lacks it. It cannot establish clinical health improvement because only a knowledge task was measured.
- Volunteers join a fictional workshop and outscore self-selected nonattendees. What fits?
- A supplied fictional study randomly assigns comparable groups and measures the same knowledge task. What fits?
- A knowledge task is measured but the conclusion claims improved physical health. What fits?
- One person reports feeling better after reading a page, with no comparison. What fits?
- Attendees had higher baseline skill than nonattendees and later score higher. What fits?
- A fictional randomized task study is reported only for its tested sample/task. What fits?
Learn the idea
An association means two measured features vary together in a dataset. It does not by itself establish which caused which or whether a third factor explains the pattern. Self-selected groups may differ before the activity begins.
Read the fictional study design. A randomized assignment under comparable conditions offers stronger causal evidence than a self-selected comparison, but measurement, sample and transfer limits remain. Do not infer cause from one before-after anecdote or from an unmeasured outcome.
All cases are invented general-information tasks. No treatment experiment or health disclosure is required. The lesson teaches study reasoning, not how to run a clinical trial or decide personal care.
- Mark the facts or constraints in the supplied case.
- Apply the method explained above; draw a sequence, table or decision map.
- Compare your result with the worked solution and explain the difference.
- Complete the new cases, then check the changed-case extension.
See the method in action
The fictional workshop attendees volunteer, while nonattendees choose not to join. Attendees later score higher on a source-identification task. The difference is an association; prior skill, access or motivation could differ between groups. Random assignment with comparable testing would strengthen a causal design, but this supplied study lacks it. It cannot establish clinical health improvement because only a knowledge task was measured.
Check your reasoning
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Helpful tips
- A group difference does not establish cause without design evidence.
- Knowledge, participation and clinical health are different outcomes.
See the answer and explanation
Report association and possible prior group differences; cause is not established.
Groups may differ before participation; association alone does not establish cause.
Take it further
Draw two study diagrams: self-selection versus random assignment for a source-reading task. Expected: identify prior-group-difference concern and stronger controlled comparison, without clinical or universal claims.
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More practice: try new cases
Choose an answer for each problem. Explain your method on paper, then use the feedback to decide what to revisit.
Your choices are temporary. Feedback appears after you check all the answers.
Nothing here is saved to an account or sent to a teacher. Keep your own notes or download them before leaving. The score describes these questions; it does not certify subject mastery.
Check the subject sources
These LifeStarter passages, scenarios and exercises are authored for this Academy with AI assistance and review. External resources keep their publishers’ terms. A grade label suggests a starting level; it does not establish alignment with your school’s complete requirements.