<span>(Sometimes called scopaesthesia) is a supposed phenomenon in which humans detect being stared at by extrasensory means. The idea was first explored by psychologist Edward B. Titchener in 1898 during a series of laboratory experiments that found only negative results.</span>
This initially neutral stimulus is called a <u>conditioned</u> stimulus.
A neutral stimulus on its own should produce no reaction, but if used together with an unconditioned stimulus (that causes either atraction or rejection), and after a series of repetitions, it will trigger the same reaction as the one generated by the unconditioned stimulus with which is paired.
This learning mechanism which involves an unconditioned stimulus, and a neutral one which becomes conditioned, is known as classical conditioning.
Why was Della nervous for Jim to come home? She was afraid he wouldn't like her hair. She was afraid he wouldn't like his present. She was afraid to see what he got her.
