Dependent variables in research on problem behavior typically are based on measures of response repetition, but these measures may be problematic when behavior poses high risk or when its occurrence terminates a session. We examined response latency as the index of behavior during assessment. In Experiment 1, we compared response rate and latency…

The purpose of this project was to assess the degree to which the most popular method of calculating reliability of interval data, the I-I method, served the author's scientific purposes. Data were collected and analyses performed to assess the adequacy of I-I reliability scores in serving three functions: (1) as an index of how precise, clear,…