C08 Evaluate the Validity and Reliability Part 1 Flashcards
IOA may be influenced by
All the above:
The complexity of the recording procedure,
The number of behaviors upon which date are being collected.
The number of individuals upon whom data are being collected.
Disagreements between observers
Should be analyzed
Computation of data
By data collectors should be supplemented with computation by others
IOA may be influenced by
The number of individuals upon whom data are being collected
IOA should be at an acceptably high level
Prior to beginning the sessions
In addition to reporting interval by interval agreement, also report overall agreement of nonoccurrences when the number of intervals in which the behavior occurs is
Very high
To obtain more accurate IOA, observers should
Be naive to the objectives of the study
Which characterizes the logic behind IOA agreement?
If two people say that something occurred, it is more likely that it did
Which reflects the logic behind the need to report occurrence/nonoccurrence agreement data. “Their interval by interval agreement is high, but
Because the behavior is so frequent, they appear to be recording occurrences when there were none.”
Ideally, the only reinforcement contingencies operating on observers are related to
Accuracy of the data
Overall agreement of nonoccurrences should be reported when
Most of the intervals indicate a response
Minimally, IOA data should be collected
In 20 to 30% of the sessions and at least once per condition
Overall agreement of occurrences should be reported when
Most of the the intervals indicate no response
Useful error patterns of observers could be identified
Through daily comparisons of each observer’s recordings
To obtain more accurate IOA, observers should
Mark every interval