How do you study the effects of brain damage to the hippocampus?

Or “genius?”

S-S research is not a “case study” approach Rigorously controlled Systematic effort to determine cause Efforts to rule out rival hypothesis Efforts to assess external validity Emphasis on quantitative measures rather than subjective assessment

Hermann Ebbinghaus

Validity of Nonsense syllable learning?

You should know who this is.

Why did Skinner advocate study of the individual?

Cumulative recorder

Argued that study of the individual is the only meaningful way to study behavior.

You can take any idea a bit too far can’t you.

Basic Reversal Designs: ABA… don’t confuse with ABBA within group designs Baseline Intervention reversal

Basic reversal design

Reversal Designs cont’ Therapeutic end-points? ABAB designs

Basic reversal design

Reversal designs Intra subject replication-causality Inter subject replication external validity

Issues for Reversal designs Baseline stability Criteria for “change” Criteria for reversal partial reversal?

What if you can’t reverse?

Baseline drift

Small-n designs in brain studies

Cumulative records of neural activity

What about situations where you would not want to reverse an effective treatment? MBDs

Consider the classroom environment

Contingency analysis

Consider your home environment

Consider the scientific environment

Small-n designs in behavior studies