How does positive affect differ from optimism?
optimism is more scientific than positive affect.
positive affect is more scientific than optimism.
positive affect involves feeling states, whereas optimism involves expectations.
optimism involves feeling states, whereas positive affect involves expectations.

Positive affect involves feeling states, whereas optimism involves expectations.

Explanation:

The positive affect, protagonist of this article, is nothing more than a general state of mind composed of a set of positive emotions. These emotions will bring multiple benefits to all of us. So much so that it is shown that they take care of our health, improve our perception of our body and contribute to our relationships are stronger and more enjoyable.  On the other hand, optimism is the willingness to look at things on their positive side and always wait for a favorable outcome, even in very difficult situations. It is the opposite of pessimism.

From this, we can conclude that the way positive affect differs from optimism is that positive affect involves states of feeling, while optimism involves expectations.

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