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Table 1 Examples of questionnaire items assessing indirect Attitude, Subjective Norm and PBC

From: Use of the Theory of Planned Behaviour to assess factors influencing the identification of students at clinical high-risk for psychosis in 16+ Education

Belief Strength

N Items

Sample Item

Impact of Belief

N items

Sample Item

Attitude

11

If I were to identify students at risk of developing psychosis at school or college it would maintain their social functioning (e.g. support networks & relationships)

Outcome evaluation for each attitudinal belief

11

Maintaining social functioning of students is unimportant-important : Extremely unimportant - extremely important

Subjective Norm

5

The student’s family think I should identify a student at risk of developing psychosis at school or college

Motivation to comply with each group or individual

5

How much do you care what a student’s family think you should do? Not at all – very much

Perceived Behavioural Control

10

We have a school/college-wide procedure for identifying students at risk of developing psychosis

The power each control belief exerts

10

Having a school/college-wide procedure would make identifying students at risk of developing psychosis : Less likely – more likely