A discriminative stimulus (Sd or SD) is created when the response is reinforced in its presence, but not when it is absent1. For example, a child requests to watch TV and historically, he is granted more screen time when his Mom has to get on a conference call for work, but never when she doesn't have to take a call.Oct 17, 2021
What is SD in autism?
SD, or discriminative stimulus, is formally defined as “a stimulus in the presence of which a particular response will be reinforced” (Malott, 2007).
What is SD in reinforcement?
S-delta. The S-delta (SD) is the stimulus in the presence of which the behavior is not reinforced. At first during discrimination training, the animal often responds in the presence of stimuli that are similar to the SD.
What is an example of SD?
This is a stimulus that has a history of signaling the availability of reinforcement. For example, a Starbucks Coffee sign signals the availability of coffee. If you are tired, seeing a Starbucks sign signals the availability of reinforcement (coffee).