GMAT Sentence Correction (SC) | Re: A course of cognitive behavior therapy can be as effective, if not mo

Yes, it is alright. Both the following are OK.

Following is an excerpt from Manhattan SC guide (Chapter: Idioms):

RIGHT:
He HELPS RAKE the leaves.
He HELPS TO RAKE the leaves.
He HELPS me RAKE the leaves.
He HELPS me TO RAKE the leaves.
His HELP IN RAKING the leaves has been welcome.

WRONG: He HELPS me IN RAKING the leaves.
I need him AS HELP TO RAKE the leaves.
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