Critic: Many popular psychological theories are poor theories in that they are inelegant and do not help to dispel the mystery that surrounds our psyche.
Conclusion
This is not really important. (rephrase: It's not really important that many popular psychological theories are inelegant and do nothing to help dispel the mystery that surrounds our psyche.)
Intermediate Conclusion
The theories produce the right results
Evidence ( ":" )
The theories have greater therapeutic success than their more scientific rivals.
Evaluate
Whenever we read Role and Main Conclusion paragraphs, we prime ourselves for a Conclusion in the first sentence or a Conclusion that feels like a rebuttal (these two patterns dominate arguments for those two question types).
When the first sentence begins, "Many popular theories are poor theories", that does sound like the author's opinion, and she even provides a couple reasons to support that opinion (inelegant / don't dispel mystery).
But then she pivots away from that into a different opinion: this isn't important.
Why? Because the theories produce the right results (more therapeutic success).
Goal
We're being asked about the final claim, which is a Premise that directly supports the Intermediate Conclusion and indirectly supports the Main Conclusion.