Deck 11: Basic Principles of Single-System Designs

Question 1

Internal validity refers to the measure actually measuring what it purports to measure.

Answer 1

False

Question 2

The major difference between the baseline and intervention phase is that no formal intervention goes on in baseline, while observation of the target event does go on in both phases.

Answer 2

True

Question 3

Interpretation of the design, A-B-C-D-C-=, is complicated mainly by:

A) Carryover effects
B) Irreversibility
C) Contrast
D) Order effects

Answer 3

D

Question 4

In an A-B-A-C design, one can make a clear comparison of the two interventions.

Question 5

When a client observes a difference between two interventions, this is called:

A) Carryover
B) Contrast
C) Order effects
D) None of the above

Question 6

The designation "D" could stand for a single technique or a combination of several techniques, but it does not stand for an entire intervention program.

Question 7

If you validated shame aversion therapy in your clinic with exhibitionists, and I validated it in my setting with nose fetishists, this would be an example of:

A) Direct replication
B) Clinical replication
C) Systematic replication
D) None of the above

Question 8

The key assumption of the baseline/intervention comparison is that the baseline pattern will be more variable in the next period if there is no intervention.

Question 9

Training, maintenance, and follow-up are all types of phases in single-system design.

Question 10

During the intervention, Manu got married and his test scores showed significant improvement. The most likely threat to internal validity this poses is:

A) History
B) Regression
C) Instrumentation
D) None of the above

Question 11

A single technique could properly be designated as BC.

Question 12

The key aspect of the intervention period that distinguishes it from a non-intervention phase is that the intervention is:

A) Planned
B) Formal
C) Systematic
D) All of the above
E) None of the above

Question 13

Repetition of a given intervention by the same practitioner in order to generalize is called:

A) Direct replication
B) Clinical replication
C) Systematic replication
D) Intersubject replication

Question 14

The generic term for any design in which the original intervention is taken away is:

A) Reversal
B) Withdrawal
C) Removal
D) Reversible

Question 15

A phase is a period of observation and/or service activity that is distinct from all other periods. (Reminder: Keep in mind return to baseline phases. Are they identical or not?)

Question 16

Threats to the validity of some conclusion you reach in a single-system design means that logically, the same outcome could have occurred because of reasons other than your specific intervention.

Question 17

The maintenance phase with the following notation suggests that the original intervention has been continued but with a brand new maintenance plan added: A-B-BC.