Chapter 8 - Quasi-Experimental Research

Question 1

Quasi-experimental research

Answer 1

Quasi means “resembling” so quasi experimental research resembles experimental research but it lacks the random assignment of participants or a control group.

Question 2

One group posttest only design

Answer 2

WEAKEST TYPE OF QE DESIGN
A treatment is implemented (or an independent variable is manipulated) and then a dependent variable is measured once after the treatment is implemented.

Question 3

One-group pretest-posttest design

Answer 3

In a one-group pretest-posttest design, the dependent variable is measured once before the treatment is implemented and once after it is implemented.

Question 4

Interrupted time-series design

Answer 4

A variant of the pretest-posttest design is the interrupted time-series design. A time series is a set of measurements taken at intervals over a period of time. For example, a manufacturing company might measure its workers’ productivity each week for a year. In an interrupted time series-design, a time series like this one is “interrupted” by a treatment.