B. F. SKINNER
INTRODUCTION
	Giant of 20th century psychology
	Psychology of actions
	Not much developmental
CONTRIBUTIONS
	Methodology - philosophy of science:
	-- Focus on overt behavior & objective report
	-- Behavior resides in the individual
		N=1 designs
	-- Functional analysis
		functional definitions
	Principles
	-- Principle of reinforcement (empirical law of 
	effect)
		Positive
If R--->+C, and R strengthed, then C is positive reinforcer
		Negative
If R--->-C, and R strengthed, then C is negative reinforcer.
	-- Extinction
	-- Punishment
If R--->+C, and R is weakened, then C is punisher.
If R--->-C, and R is weakened, then C is punisher.
	Minor Principles
	Other Characteristics
	-- Preference for positive control
	-- Practical implications (behavior modification)
CONCLUSION