In _______ design two groups or areas (test area and control area) are selected and the treatment is introduced into the test area only. The dependent variable is then measured in both the areas at the same time. Treatment impact is assessed by subtracting the value of the dependent variable in the control area from its value in the test areaChoose one optionBefore-and-after without control designBefore-and-after with control designAfter-only with control designNone

In ________ design a single test group or area is selected and the dependent variable is measured before the introduction of the treatment. The treatment is then introduced and the dependent variable is measured again after the treatment has been introduced. The effect of the treatment would be equal to the level of the phenomenon after the treatment minus the level of the phenomenon before the treatmentChoose one optionBefore-and-after with control designBefore-and-after without control designAfter-only with control designNone

A control group or a control condition is included in an experiment in order toQuestion 5Answera.evaluate experimenter effects and demand effects.b.prevent ceiling or floor effects.c.increase the generalizability of the results.d.provide a baseline against which the variable of interest can be compared.

Informal experimental designs are _________Choose one optionBefore-and-after without control designAfter-only with control designBefore-and-after with control designAll the above

Which experimental design includes a pretest and post-test measurement for both the control and experimental groups?Review LaterPost-test only designRandomized Control Trial (RCT)Solomon four group designFactorial design

Which experimental design compares the outcomes of a treatment group to a non-randomly assigned control group?Review LaterPost-test only designPretest-post-test only designNon-equivalent control group designTime series design