title: Effects of Choice of Work Tasks on On-Task, Aberrant, Happiness and Unhappiness Behaviours of Persons with Developmental Disabilities.
abstract: Effects of choice versus no choice of work tasks on work performance, inappropriate behaviours, happiness and unhappiness indices were examined in three studies. Study 1 examined the effects of a choice between a high and a low preference task, versus the assignment of the high preference task. Study 2 was similar to Study 1 except that the tasks in the choice condition were equally and moderately preferred. Study 3 was conducted by the participants' instructors in their natural work settings. A total of five participants were involved across the three studies. Very few differences were found under the choice and no-choice conditions. More research is needed to examine the role of reinforcement history in establishing stimulus control effects of choice.
authors.forename: Sara
authors.initials: S
authors.lastname: Spevack
authors.forename: Toby L
authors.initials: TL
authors.lastname: Martin
authors.forename: Rene
authors.initials: R
authors.lastname: Hiebert
authors.forename: C T
authors.initials: CT
authors.lastname: Yu
authors.forename: Garry L
authors.initials: GL
authors.lastname: Martin
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