Question

Which is the best interpretation for the following results of an ABAB design evaluating the effects of an intervention that aims to improve scores on a scale measuring child rearing knowledge? First baseline phase: 30 30 31 29 30 31 29 29 First intervention phase: 35 40 43 46 50 60 65 70 Second baseline phase: 70 70 70 70 70 70 70 70 Second intervention phase: 70 70 70 70 70 70 70 70 Group of answer choices The intervention clearly was effective. The results clearly appear to be attributed to history. The results could be attributed to history or could mean that the intervention had irreversible effects. The results appear to be attributed to regression to the mean. The results appear to be attributed to an ongoing trend that was improving with the passage of time.

          Which is the best interpretation for the following results of an ABAB design evaluating the effects of an intervention that aims to improve scores on a scale measuring child rearing knowledge?
First baseline phase:             30 30 31 29 30 31 29 29
First intervention phase:       35 40 43 46 50 60 65 70
Second baseline phase:         70 70 70 70 70 70 70 70
Second intervention phase:  70 70 70 70 70 70 70 70
Group of answer choices
The intervention clearly was effective.
The results clearly appear to be attributed to history.
The results could be attributed to history or could mean that the intervention had irreversible effects.
The results appear to be attributed to regression to the mean.
The results appear to be attributed to an ongoing trend that was improving with the passage of time.

Added by Kelly C.

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