Consider an experiment in which a pigeon is placed in a Skinner box with a button on the wall. The cage contains a small green light that is turned on and off intermittently throughout the day. When the pigeon pecks the button when the green light is on, the behavior is reinforced with food. When it pecks the button when the green light is off, the behavior is not reinforced. The pigeon soon learns that button pecking will be rewarded only when the green light is on. In this scenario, the green light is a(n)__________.
A) unconditioned stimulus
B) discriminative stimulus
C) unlearned stimulus
D) aversive stimulus
E) Select
Question 2
__________is characterized by excessive worrying, fear of losing control, nervousness, and inability to relax.
A) Psychomotor retardation
B) Dissociative amnesia
C) Delusional disorder
D) Anxiety disorder
E) Select
Testing the reducing atmosphere hypothesis for the origin of life - the Miller and Urey experiment.
Angioplasty. One form is called balloon angioplasty, shown here. A balloon catheter is threaded into
Abiogenesis Experiment
The cell wall of a Gram-negative bacterium, E. coli
The Milgram Obedience Experiment
Visual Cliff Experiment