The article proposes a sequential alternating treatments design requiring that two treatments be initially implemented in a random or counterbalanced fashion followed by a sequential change in one or both treatments across settings, subjects, or tasks. This design is appropriate when it is not feasible to obtain a traditional baseline condition.…

This study comparing momentary time sampling against the real time obtained with handheld computers confirmed laboratory findings that short-elementary time sampling estimates percentage time accurately for a wide range of behavior frequencies and durations, and suggested that observers using momentary time sampling in a natural setting are able…

Visual analysis is examined as the dominant analytical method for single-case time series, in a study with 37 postgraduate research students which varied serial dependence, amount of random variability, and effect size. False alarm rates were high, but miss rates were low, indicating that visual analysts are not conservative judges, and serial…

Computer-assisted observer training of 12 college students using interactive videotapes produced observational repertoires that accurately reflected a wide range of targeted events. Maintenance (thinning feedback) and nonmaintenance (no feedback) training generated equivalent degrees of observational accuracy. Data indicated the standard practice…