1.Easy
Which is an example of qualitative data?
- ANumber of words recalled
- BReaction times in milliseconds
- CInterview transcripts describing feelings about work
- DScores on a 20-item memory test
2.Easy
Which level of measurement has equal intervals and a true zero point, such as reaction time?
- AInterval
- BNominal
- CRatio
- DOrdinal
3.Easy
A case study is:
- AA laboratory experiment with two conditions
- BA statistical review of many published studies
- CA survey of thousands of randomly selected people from the general population
- DAn in-depth investigation of one person, group or event
4.Medium
Publication bias refers to:
- AResearchers publishing the same study twice
- BStudies with significant results being more likely to be published than null results
- CReviewers favouring papers by authors from famous universities over lesser-known ones
- DJournals publishing only qualitative research
5.Medium
In a correlation, r = 0.40. What proportion of variance in one variable is shared with the other?
- A16%
- B40%
- C4%
- D60%
6.Medium
A 95% confidence interval for a mean of 50 is 46 to 54. What is the most accurate interpretation?
- AThere is a 95% chance the sample mean is 50
- BThe result is not significant
- C95% of the individual participants in the sample scored between 46 and 54 on the measure
- DThe procedure used produces intervals that contain the true mean 95% of the time
7.Hard
The "replication crisis" in psychology refers to:
- AJournals being legally required to reject all replication studies submitted
- BCopying of questionnaires without permission
- CMany published findings failing to reproduce in new studies
- DA shortage of participants for experiments
8.Hard
Increasing the sample size in a study most directly:
- AGuarantees a statistically significant result if any effect exists
- BIncreases the effect size
- CIncreases statistical power to detect a real effect
- DRemoves all bias from the sample
Answer key
- 1. C · Interview transcripts describing feelings about work
- 2. C · Ratio
- 3. D · An in-depth investigation of one person, group or event
- 4. B · Studies with significant results being more likely to be published than null results
- 5. A · 16%
- 6. D · The procedure used produces intervals that contain the true mean 95% of the time
- 7. C · Many published findings failing to reproduce in new studies
- 8. C · Increases statistical power to detect a real effect
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