1.Easy
Why should correlation not be taken as proof of causation?
- ACorrelations are never statistically significant
- BCorrelations can only be negative
- CCorrelation coefficients are always too weak to indicate any real relationship
- DA third variable or reverse causation could explain the relationship
2.Easy
In a naturalistic observation, the researcher:
- ARandomly assigns participants to conditions
- BAsks participants to complete a questionnaire about their everyday behaviour
- CObserves behaviour in its usual setting without manipulating variables
- DControls the environment in a laboratory
3.Easy
Which level of measurement has equal intervals and a true zero point, such as reaction time?
- ANominal
- BRatio
- CInterval
- DOrdinal
4.Medium
Split-half reliability involves:
- ASplitting the sample into an experimental and a control group and comparing their scores
- BTesting two halves of the sample at different times
- CComparing scores on two halves of the same test to check internal consistency
- DUsing two observers for half the sessions each
5.Medium
Standardised instructions are used in an experiment so that:
- AThe results become statistically significant
- BAll participants receive the same information in the same way
- CParticipants can choose their own conditions
- DThe researcher can adapt the procedure to suit each participant's needs
6.Medium
The same 25 participants complete a memory test before and after caffeine. The scores are interval and roughly normal. Which test is appropriate?
- AMann–Whitney U test
- BChi-square test
- CIndependent samples t-test
- DPaired (related) samples t-test
7.Hard
A memory study uses a repeated measures design where everyone learns list A then list B. Recall is better for list B. What is the most likely flaw?
- AOrder effects such as practice, because conditions were not counterbalanced
- BThe use of an ordinal level of measurement
- CIndividual differences between the groups
- DToo large a sample size
8.Hard
In qualitative research, reflexivity means that the researcher:
- AUses a random sample to remove bias
- BReflects on how their own background and assumptions may shape the analysis
- CRepeats the study to check reliability
- DConverts themes into numerical data
Answer key
- 1. D · A third variable or reverse causation could explain the relationship
- 2. C · Observes behaviour in its usual setting without manipulating variables
- 3. B · Ratio
- 4. C · Comparing scores on two halves of the same test to check internal consistency
- 5. B · All participants receive the same information in the same way
- 6. D · Paired (related) samples t-test
- 7. A · Order effects such as practice, because conditions were not counterbalanced
- 8. B · Reflects on how their own background and assumptions may shape the analysis
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