Experimental Design

Question 1

Single Case Designs

Answer 1

When the treatment effect is so large that it can be seen with the naked eye, and in a single-subject

Often used to evaluate effectiveness of interventions

Measurement-Intervention-Measurement

Question 2

Quasi-Experimental

Answer 2

A design which doesn’t meet all criteria for a controlled experiment (eg, one group, pre test, post test)

Question 3

Between Subjects

Answer 3

Use separate groups of participants for each of the different conditions in the experiment. Each participant is tested once only. Independent Measures

Question 4

Within Subjects

Answer 4

each participant is exposed to all the experimental conditions. Each participant is tested as often as there are conditions. Repeated Measures

Question 5

Random Assignment

Answer 5

very important in between subjects that participants are placed randomly into conditions

Question 6

Counterbalancing

Answer 6

important in within subjects, condition order is different in different subjects

Question 7

Advantages of Within Subjects Design

Answer 7

Economical and tend to have smaller measurement errors

Question 8

Disadvantages of Within Subjects Design

Answer 8

Effects that are possible from counterbalancing, effects from participating in another condition