IPA: /nɒnˈɪndɪvɪdʒuəl/
KK: /nɑnˈɪndɪˌvɪdʒuəl/
Referring to something that is not specific to an individual or does not pertain to a single person.
The study focused on nonindividual factors that affect group behavior.
Nonindividual → It is formed from "non-" (meaning not) and "individual" (from Latin "individuus", meaning indivisible or a single entity). The word "nonindividual" means not pertaining to an individual or not being a single entity.
Think of 'not' ('non-') being applied to something that is 'indivisible' or a 'single entity' — that's why nonindividual means not related to a single person or thing.