J. Mark Cleaveland

Vassar College

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J. Mark Cleaveland is a researcher at Vassar College whose work in behavioral psychology focuses on choice behavior in pigeons, particularly the mechanisms underlying changeover delay and variable-interval schedules. Cleaveland's research examines how response chunking and related processes shape patterns of choice, contributing to the experimental analysis of behavior.

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19 Publications

125 Citations

6 h-index

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Publications in advances.in/psychology

A conceptual artistic photo showing two open doorways in a dim, textured room, each emitting warm glowing light. A flock of bird silhouettes flies between them, transitioning from a dark dissolving mass on the left toward the illuminated openings. The imagery evokes choice and switching between two options, metaphorically representing pigeon preference and changeover behavior during concurrent VI VI reinforcement schedules.

Research Article

When a stay is a switch: Discriminative control of response chunks determines preference during concurrent VI VI schedules

By J. Mark Cleaveland

July 21, 2026

Page last updated: July 24, 2026