Newspaper headline: Treatment for schizophrenia is successful. Sensky et al. (2000) conducted a longitudinal study and found that cognitive-behavioural therapy was effective. It treated both negative and positive symptoms in patients that were resistant to drug treatments for schizophrenia.
- (a)Explain what is meant by the term 'baseline' when gathering data.[2]
- (b)Suggest two weaknesses of the longitudinal method in the study by Sensky et al. (2000).[4]
- (c)(i)Identify the two therapies that this design compared.[2]
- (c)(ii)Suggest why a randomised controlled design was used.[2]
- (d)Discuss the strengths and weaknesses of cognitive-behavioural therapy as an alternative to drug treatments for schizophrenia. You should include a conclusion in your answer.[5]
Mark scheme
Marking points from the official mark scheme (May/June 2020). The mark or mark type is shown in brackets.
- [2] Gathering baseline data at the outset of a programme allows a comparison with data gathered afterward, allowing changes to be tracked to determine whether any intervention has been effective.
- [2] Participants may drop out over the 9 months of therapy and 9 months of follow-up
- [2] Over time, participants may not follow the treatment programme exactly; may take other medications; may develop other symptoms and/or illnesses.
- [1] 'manualized cognitive behavioural therapy developed particularly for schizophrenia with that of a nonspecific befriending control intervention.'
- [2] Researchers do not allocate participants to conditions so there is no bias. Instead participants are allocated randomly, by chance, so reducing extraneous variables. Use of control group etc.
- [1] no drugs are taken
- [1] the patient does not become addicted to drugs
- [1] the patient plays a more active role in their own treatment
- [1] a therapist is there to guide the patient through the treatment
- [1] more effort is needed by the patient; it isn't passive as is taking a drug
- [1] the cause of schizophrenia may be biochemical and so a drug treatment may be best
- [1] a therapist is needed, which costs more and consumes more time than does swallowing a pill
- [1] any appropriate conclusion drawn from the discussion that has been presented.
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