Question

A random sample of respondents would be distributed randomly, half to the experimental group and half to the control group. A pretest questionnaire would be administered to the respondents in both groups to obtain a measurement on attitudes toward Pepsi advertising, brand, and celebrity; only the respondents in the experimental group would be exposed to the TV program containing the Pepsi commercial. Then, a questionnaire would be administered to respondents in both groups to obtain posttest measures on attitudes toward Pepsi advertising, brand, and celebrity. Which of the following experimental design best represents the above scenario?
a. one-shot case study
b. one-group pretest-posttest design
c. after-only with control group design
d. before and after with control group design
e. interrupted time-series design

Answer 1

The experimental design which best represents the above random survey is: B. one-group pretest-posttest design.

An experimental design can be defined as a research method (concept) in which a controlled experimental factor is objectively and efficiently subjected to a special treatment (intervention), in order to compare it with a factor (controlled variable) that is kept constant. Thus, it is used to maximize precision in an experiment and to reach a specific conclusion on a hypothesis statement.

Basically, there are three (3) main types of experimental design and these include:

1. Quasi-experimental research design

2. True experimental research design

3. Pre-experimental research design

Under the pre-experimental research design, we have three (3) forms of experimental design and these are:

• One-shot case study research design

• Static-group comparison

• One-group pretest-posttest design

One-group pretest-posttest research design is mostly used by behavioral researchers to determine the effect of a special treatment (intervention) on a given sample of participants, especially by first utilizing a single group of participants (one-group design) before the treatment is implemented and once after the treatment is implemented.

In conclusion, a one-group pretest-posttest research design is the experimental design which best represents the above random survey.

Read more on experimental design here: brainly.com/question/13284940