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