reinforcer
UK[ˌriːɪnˈfɔːsə]US[ˌriːɪnˈfɔːrsər]
n
something that strengthens or increases the likelihood of a specific response or behavior, especially by providing a reward.
n
a stimulus, such as a reward or the removal of an unpleasant state, that follows a response and increases its probability of occurring.
Morpheme Breakdown
re
inforce
er
re
again
inforce
strengthen
er
agent/thing
Etymology
The word 'reinforcer' is built upon the verb 'reinforce', which entered English in the 16th century from French 'renforcer'. Its core components trace back to Latin: the prefix 're-' (again) and the concept of strength from 'fortis'. The literal sense of "to strengthen again" or "to fortify anew" was originally applied to military and physical contexts. In the 20th century, behavioral psychology adopted the term, with 'reinforcer' emerging as the noun for any consequence that "strengthens again" the likelihood of a preceding behavior, thus extending the abstract logic of fortification to the realm of learning and habit formation.
Analysis
Structure: re (again) + inforce (strengthen) + er (agent/thing)
- re: A prefix of Latin origin meaning "again" or "back".
- inforce: A base derived from the verb 'enforce', itself from Old French 'enforcier' (to strengthen, force), ultimately from Latin 'in-' (in) + 'fortis' (strong).
- er: An agent noun suffix of Old English origin, used to form nouns denoting a person or thing that performs an action.
Examples
In the experiment, a food pellet served as a primary reinforcer for the rat's lever-pressing behavior.
Positive feedback from a manager can be a powerful social reinforcer for employees.
The therapist helped identify the reinforcer that was maintaining the child's tantrums.