The present report analyzes trends in attendance and presentations at the annual conference of the Association for Behavior Analysis (ABA). Numbers of registered attendees were plotted over time. The trends show that the number of registered attendees has grown considerably over the last three decades, with the largest proportion of the growth…

Identifies 24 thematic categories among research articles appearing in the first 10 volumes of the journal. Notes that predominant themes were test reliability and validity, acculturation and adaptation of Hispanics, and bilingual/language issues. Indicates three major clusters of researchers publishing on Hispanic issues. (SV)

Knowledge restructuring occurs when people shift to a new strategy or representation during learning. Although knowledge restructuring can frequently be experimentally encouraged, there are instances in which people resist restructuring and continue to use an expedient but imperfect initial strategy. The authors report 3 category learning…