Study A finds fewer wrong turns with Map X on a small indoor route. Study B finds no difference between X and Y on an outdoor route. Both reports describe only their own tested routes.
Which synthesis is faithful?
Answer & why
Answer: The results differ across the tested settings; the studies do not establish one universal winner.
Different settings can produce different findings without establishing a universal ranking.
Two studies report the same mean score. One has tightly grouped scores; the other has a wide spread.
Which synthesis preserves both findings?
Every participant scored identically in both studies.
Their averages match, but the distributions differ.
A shared mean proves a shared distribution.
A spread cannot exist when a mean is reported.
A hint
State what each study actually measured; do not turn agreement, association or separate comparisons into a stronger conclusion than the sources support.
Answer & why
Answer: Their averages match, but the distributions differ.
The same average can summarize different amounts of variation.
A review finds five studies. Four report only short-term outcomes, and one also reports a one-year follow-up.
Which conclusion respects that evidence base?
All five studies measured one-year outcomes.
Five study titles guarantee lifetime effects.
No study reported any long-term result.
Most evidence described is short term; long-term conclusions rely on the single follow-up study.
A hint
State what each study actually measured; do not turn agreement, association or separate comparisons into a stronger conclusion than the sources support.
Answer & why
Answer: Most evidence described is short term; long-term conclusions rely on the single follow-up study.
The synthesis distinguishes the amount of evidence available at each time horizon.
Study A finds fewer wrong turns with Map X on a small indoor route. Study B finds no difference between X and Y on an outdoor route. Both reports describe only their own tested routes.
Which synthesis is faithful?
Map X is proved best on every route.
The results differ across the tested settings; the studies do not establish one universal winner.
The studies cannot both have recorded their stated results.
Study B proves nobody can use maps.
A hint
State what each study actually measured; do not turn agreement, association or separate comparisons into a stronger conclusion than the sources support.
Answer & why
Answer: The results differ across the tested settings; the studies do not establish one universal winner.
Different settings can produce different findings without establishing a universal ranking.
One report measures immediate recall after a demonstration; another measures recall a month later in a different sample. Their scores differ.
Which synthesis preserves the methodological difference?
The scores prove one report invented its data.
The reports concern different time points and samples, so the scores are not a direct like-for-like comparison.
Time and sample differences cannot affect interpretation.
Both reports measured the same people at the same moment.
A hint
State what each study actually measured; do not turn agreement, association or separate comparisons into a stronger conclusion than the sources support.
Answer & why
Answer: The reports concern different time points and samples, so the scores are not a direct like-for-like comparison.
The measured timing and participants differ, limiting direct comparison.
Three reports use the same original survey dataset but analyze different questions within it.
Which statement correctly describes their evidential independence?
They offer different analyses of one shared dataset, not three independently collected surveys.
The shared data make every analysis automatically false.
They necessarily supply three independent participant samples.
Different titles create new observations.
A hint
State what each study actually measured; do not turn agreement, association or separate comparisons into a stronger conclusion than the sources support.
Answer & why
Answer: They offer different analyses of one shared dataset, not three independently collected surveys.
Distinct analyses can be useful while retaining a common data origin.
Study A compares Tool P with no tool. Study B compares Tool Q with no tool in a different population. Neither directly compares P with Q.
Which conclusion is not established by those comparisons alone?
A direct matched comparison would add relevant evidence.
Each study includes a comparison with no tool.
Tool P outperforms Tool Q in the same conditions.
The populations differ.
A hint
State what each study actually measured; do not turn agreement, association or separate comparisons into a stronger conclusion than the sources support.
Answer & why
Answer: Tool P outperforms Tool Q in the same conditions.
Separate studies with different populations do not isolate a head-to-head tool difference.
In four tested settings, an intervention helps in two, has no measured difference in one, and performs worse in one.
Which summary represents all four results?
Results are mixed across the four settings.
It helps in all tested settings.
Only the two helpful results exist.
It is worse in every setting.
A hint
State what each study actually measured; do not turn agreement, association or separate comparisons into a stronger conclusion than the sources support.
Answer & why
Answer: Results are mixed across the four settings.
A synthesis must retain positive, neutral and negative findings rather than select only favorable cases.
A large survey reports an association between attendance and satisfaction. A small interview study describes why some participants attended. Neither assigns attendance randomly.
Which synthesis is supported?
The survey reports an association, and interviews add some participants’ explanations; neither alone establishes a causal effect.
The association proves attendance caused every participant’s satisfaction.
The two studies measure the exact same type of evidence.
The interviews convert the survey into a randomized trial.
A hint
State what each study actually measured; do not turn agreement, association or separate comparisons into a stronger conclusion than the sources support.
Answer & why
Answer: The survey reports an association, and interviews add some participants’ explanations; neither alone establishes a causal effect.
The methods contribute different information without supplying random assignment or isolating causation.