D-02 Distinguish Between Interval & External Validity

Internal validity can be threatened by confounding variables related to

(all of the above) - 1. measurement 2. setting 3. independent variable

Select examples of strengthening internal validity in single subject research.

1. Each phase continued until there were 5 consecutive days of stable data on screaming. 2. The social skills post-assessment occurred at least 6 months after the same pre-assessment. 3. Data collection began after the two observers reached 90% agreement on the occurrence of spitting.

Threats to internal validity include

1. maturation of subjects 2. variability in the data 3. loss of study participants 4. history

Threats to internal validity include

1. multiple treatment interference 2. procedural drift 3. coincidentally intervening at the same time behavior changes 4. testing effects 5. "bootleg" reinforcement

Internal validity addresses which question?

Is the behavior change due only to the intervention?

External validity addresses the degree to which

a functional relation holds under different conditions.

Which is an example of establishing external validity? The SIB interruption procedure

also worked with two other 5-years olds with ASD.

The external validity of research in behavior analysis is established through

direct and systematic replication.

The generality of a study's finding to other settings, subjects, and behaviors is

external validity.

Internal validity can be threatened by confounding variables related to the

independent variable.

Internal validity can be threatened by confounding variables related to the

measurement.

An individual study in behavior analysis does not have external validity because

replication within the same study or across studies is needed.

Which is an example of strengthening internal validity? The pronoun teaching procedure

was carried out with 97.5% in both the day and residential program.

Which is an example of establishing external validity? The SIB interruption procedure

was successful in reducing the behavior at home and in school.