What's the plural form of vicarious reinforcement? Here's the word you're looking for.
Answer
The noun vicarious reinforcement can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be vicarious reinforcement.
However, in more specific contexts, the plural form can also be vicarious reinforcements e.g. in reference to various types of vicarious reinforcements
or a collection of vicarious reinforcements.