Premack

The theory

Implications

Evidence for the theory

In rats & children

Response deprivation theory (Timberlake & Allison)

Problems with Premack's approach

Difficult to quantify relative p

Sometimes a more likely R does not reinforce a less likely R

Proposed a schedule must deprive the organism of the consequent R

Evidence for response deprivation theory

Benefits of this approach

Avoids measurement problems

Neurobiological Mechanisms

Multiple memory systems view

Seeking double dissociations

Example: Performance in a T-maze (Packard)

Impact of lesioning hippocampus versus caudate