Drug discrimination / Self-administration paradigm pharm.

[Zdravko]

Пожалуйста, помогите найти русский эквивалент следующих терминов из области психофармакологии:

1) Drug discrimination, и
2) Self-administration paradigm.

Термины встрeчаются в следующем контексте:

In a drug discrimination study, animals did not identify XXX as diazepam-like, as they did with YYY.

или

This lack of diazepam-like psychopharmacology was also substantiated in a self-administration paradigm where XXX did not substitute for cocaine.

Заранее спасибо.