Each participant completed all phases of the training protocol, counting cards fluently with 100% accuracy during changing speed criterion training exercises. Before training, no participant counted cards accurately.
A multiple baseline design was used to evaluate intervention effects on card-counting accuracy and chips won or lost across participants. A behavioral skills training procedure that consisted of video instructions, video rehearsal, and video testing was used to teach 4 recreational gamblers a specific skill in playing blackjack (sometimes called card counting).
