A REVIEW OF THE OBSERVATIONAL DATA‐COLLECTION AND RELIABILITY PROCEDURES REPORTED IN THE JOURNAL OF APPLIED BEHAVIOR ANALYSIS

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Abstract
The research published in the Journal of Applied Behavior Analysis (1968 to 1975) was surveyed for three basic elements: data-collection methods, reliability procedures, and reliability scores. Three-quarters of the studies reported observational data. Most of these studies' observational methods were variations of event recording, trial scoring, interval recording, or time-sample recording. Almost all studies reported assessment of observer reliability, usually total or point-by-point percentage agreement scores. About half the agreement scores were consistently above 90%. Less than one-quarter of the studies reported that reliability was assessed at least once per condition.