Monkey See Computer Do: Simulation of Dynamic Behavior via the Evolutionary Theory of Behavior Dynamics Restricted; Files Only

Chi, Cyrus (Fall 2019)

Permanent URL: https://etd.library.emory.edu/concern/etds/tm70mw37x?locale=es
Published

Abstract

The Evolutionary Theory of Behavioral Dynamics (ETBD) is a computational instantiation of selection by consequences that allows the generation of simulated behavioral output in environments with known reinforcement schedules. This study extends the theory to examine its predictions within a dynamic concurrent random interval environment with unsignaled transitions between 33 unique pairs of reinforcement schedules. The results were compared with behavioral data from rhesus monkeys (n=2) that were placed in a similar environment over three different levels of analysis. At the macro-level, the generalized matching law (GLM; Baum, 1974) fit the data from the virtual organisms animated by the ETBD well and returned parameters comparable to those from GML fits to the rhesus monkeys’ data. At the transition level, virtual organisms adapted more quickly at the unsignaled transitions between schedules than the rhesus monkeys. At the local level, the dynamic responses of virtual organism behavior to changes in reinforcement were comparable to that of rhesus monkeys.

Table of Contents

I. Introduction ................................................................................................................................. 1

Evolutionary Theory of Behavioral Dynamics ........................................................................... 2

The Virtual Organism. ............................................................................................................ 3

The Rules of the ETBD........................................................................................................... 4

Evidence Supporting the Theory. ........................................................................................... 6

Dynamic Behavior..................................................................................................................... 10

Monkey Experimental Paradigm............................................................................................... 11

Present Study............................................................................................................................. 12

II. Methods.................................................................................................................................... 13

Subjects ..................................................................................................................................... 13

Simulated Environment............................................................................................................. 14

ETBD Adaptations to fit the Experimental Paradigm............................................................... 15

Data Analysis ............................................................................................................................ 17

Macro-level analysis. ............................................................................................................ 17

Transition-level analysis ....................................................................................................... 18

Local-level analysis. ............................................................................................................. 22

III. Results..................................................................................................................................... 23

IV. Discussion............................................................................................................................... 26

Limitations, Strengths, and Future Directions .......................................................................... 30

V. Acknowledgments.................................................................................................................... 33

References..................................................................................................................................... 34

Figure 1. The Virtual Organism’s Behavioral Repertoire and Target Classes ............................. 38

Figure 2. Evolutionary Theory of Behavioral Dynamics - Flowchart .......................................... 39

Figure 3 Transition Analysis Schematic ....................................................................................... 40

Figure 4. Macro Level – Power Function Matching Law Fit ....................................................... 41

Figure 5. Transition Level – Virtual Organism Average and Individual Plots............................. 42

Figure 6 Transition Level – Behavior Comparisons..................................................................... 44

Figure 7. Transition Level – Average Virtual Organism and Monkey Comparison .................... 46

Figure 8. Local Level - Histograms of Block Correlation VO and Monkey Comparison............ 48

Figure 9. Local Level – Virtual Organism Individual Plots ......................................................... 49

Figure 10. Local Level – Virtual Organism Averaged Plots ........................................................ 51

Figure 11. Local Level – Virtual Organism and Monkey Comparison ........................................ 53

Table 1: Table of schedule ratios used in the study...................................................................... 55

About this Master's Thesis

Rights statement
  • Permission granted by the author to include this thesis or dissertation in this repository. All rights reserved by the author. Please contact the author for information regarding the reproduction and use of this thesis or dissertation.
School
Department
Subfield / Discipline
Degree
Submission
Language
  • English
Research field
Palabra Clave
Committee Chair / Thesis Advisor
Committee Members
Última modificación

Primary PDF

Supplemental Files