Deck 4: Experimental Research

Question 1

A study design that includes a single independent variable is called:

A) Two-way design
B) Factorial design
C) One-way design
D) Single-blind study

Answer 1

One-way design

Question 2

A study design in which subjects are randomly assigned to groups and the groups complete the conditions of a study in random order is called:

A) Quasi-experimental study
B) Crossover design
C) Between-subjects design
D) Independent groups design

Answer 2

Crossover design

Question 3

A study design in which subjects are randomly assigned to and participate in only one of two groups is called:

A) Quasi-experimental study
B) Crossover design
C) Within-subjects design
D) Independent groups design

Answer 3

Independent groups design

Question 4

A study design that lacks random assignment, a comparison group, or both, is called:

A) Quasi-experimental study
B) Crossover design
C) Within-subjects design
D) Independent groups design

Question 5

A study design feature that allows a researcher to use the change in a subject's measurements over the study period as a dependent variable is called:

A) Between-subjects design
B) Pretest-posttest design
C) Factorial design
D) Control group design

Question 6

A study is designed to investigate the difference between two different intensities of ultrasound as well as two different durations of ultrasound treatment for treatment of diabetic ulcers. This research design would be classified as:

A) One-way (single factor) design
B) Two-way (two factor) design
C) Three-way (three factor) design
D) Four-way (four factor) design

Question 7

A method for ensuring that individuals involved in a study do not know the group classification of subjects is called:

A) Masking
B) Washout
C) Carryover
D) Crossover

Question 8

Which of the following is not a classification of control group?

A) No-treatment control group
B) Placebo control group
C) Experimental control group
D) Active control group

Question 9

A washout period is incorporated into a research design to minimize:

A) Crossover effect
B) Carryover effect
C) Bias
D) Blinding

Question 10

Attrition will impact:

A) Number of groups
B) Number of subjects
C) Reliability
D) Length of experiment

Question 11

Threats to the validity of a study include:

A) Sampling bias
B) Large sample size
C) Use of appropriate statistical tests
D) Blinding

Question 12

PTAs should be able to read, understand, and appraise experimental research because it is primarily used to investigate:

A) Diagnostics
B) Interventions
C) Outcomes
D) Prognostic factors