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Why is this an issue : evaluation of CBT in SZ

Tarrier et al (2000) found no real benefits of CBT year after treatment stopped, even less after 2 years. Why is this an issue?

Kopelowicz + Liberman (1998) found relapse rate was moderate and treatment deemed to be moderately expensive. Why is this an issue?

I cant come up with more points
It shows that they are not effective
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en8827
10
if the CBT treatment is ineffective in the long term that means that the studies are low in internal validity because it shows they are not measuring what they are supposed to be measuring. (treating schizophrenia)

If the treatment is also expensive it makes the study less applicable to the real world, as it makes it more difficult to carry out.

hope this helps!

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