Ellen has started drinking when she goes out to parties. She likes feeling relaxed and talkative. According to Vernon Johnson's model for explaining behavioral changes associated with alcohol use and the emergence of dependenc.

Ellen is learning the mood swing

Explanation:

According to Vernon Johnson's model for explaining behavioral changes associated with alcohol use and the emergence of dependence, there are actually four stages involved in this process: Learning the mood swing, seeking the mood swing, harmful use, and drinking to feel normal. From the example, Ellen is drinking to feel relaxed and talkative, hence she is still in the first stage of Vernon Johnson's model, as she is still learning the mood swing.