Title page for ETD etd-04152009-093730

Type of Document Dissertation
Author Esteve, Brian
Author's Email Address bestev1@tigers.lsu.edu, brianesteve@cox.net
URN etd-04152009-093730
Title Analysis of Progressive Lag Reinforcement Schedules and Environmental Cues on Verbal Response Variability
Degree Doctor of Philosophy (Ph.D.)
Department Psychology
Advisory Committee
Advisor Name Title
George Noell Committee Chair
Frank Gresham Committee Member
Kristin Gansle Committee Member
Mary L. Kelley Committee Member
Michelle Livermore Dean's Representative
  • language delays
  • stimulus cues
  • variability
  • verbal behavior
  • progressive lag reinforcement schedules
Date of Defense 2009-04-14
Availability unrestricted
This study examined the effectiveness of progressive lag reinforcement schedules to increase novel and appropriate verbal responses to academic skills for three children with language delays. The effect of visual cues on verbal responses was evaluated in conjunction with progressive lag reinforcement schedules using a multiple baseline with an embedded alternating treatments design. Basic research utilizing lag reinforcement schedules have shown to increase variable behavior in both animal and human participants; however, little research has been conducted to evaluate lag reinforcement schedules in applied settings. The results of this study preliminarily indicate that progressive lag reinforcement schedules are an effective and efficient method to increase variable behavior in applied settings. Experimental conditions with visual cues produced a slight overall increase in novel and appropriate verbal responses; however, this effect was not observed across all participants and baselines. The advantages and disadvantages of progressive lag reinforcement schedules and directions for future research are discussed.
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