Stimulus discrimination is a concept in behaviorist learning theory, which refers to the tendency of an organism or an individual to respond differently to a different stimulus, rather than responding the same way to other similar stimulus. As seen in the case of Meg, she is able to discriminate between the painful bruising injection and other similar sharp objects, as she doesn’t respond to other object the same way she responds to the injection.
Explanation: STIMULUS DISCRIMINATION is a phenomenon in psychology used to describe a situation where an individual learn to respond to an original stimulus and not to other similar stimuli.
Looking at the question,Meg developed fear for needles and not other sharp objects which shows that Meg was able to differentiate needle from other objects like scissors, nails and knives and therefore only have fear for needles which was what gave her the initial pain and bruises following an injection
