Preconception:

1. an opinion formed beforehand without adequate evidence

2. a partiality that prevents objective consideration of an issue or situation _{(Vocabulary.com)}

IMO, a preconception can imply 'both positive and negative emotional associations', as per your requirement.

Preconception:

1. an opinion formed beforehand without adequate evidence

2. a partiality that prevents objective consideration of an issue or situation _{(Vocabulary.com)}

IMO, a preconception can imply 'both positive and negative emotional associations', as per your requirement.