This response to four papers on the nature of reinforcement focuses on the implications for application of theory to practice. The response addresses: reversibility of single-incentive selective associations; response deprivation, reinforcement, and economics; the substitutability of reinforcers; and delay reduction. (DB)

The personalized system of instruction (PSI) is characterized by mastery, specified objectives, self-pacing, small-step sequenced materials, repeated testing, immediate feedback, credit for success rather than penalty for errors, proctors, and lectures for motivation. Research indicating the effectiveness of PSI is cited, and problems with…

This response to Chandler et al. (EC 604 147) suggests that generalization of social competence training be viewed from both functional and topographical perspectives which have scientific and practice biases, respectively. The paper proposes a generalization-discrimination continuum along which behaviors may be placed for optimum utility. (DB)

This commentary on EC 605 189 discusses assumptions of gentle teaching, its use of supportive behavioral techniques, and criticisms of gentle teaching. The paper concludes that gentle teaching is distinct from applied behavior analysis (ABA) in its unconditional valuing and focus on mutual change and is congruent with ABA in use of several…