Theory of planned behaviour

Complete notes on Theory of Planned behaviour- particulalry useful for the addiction section in the PSYA4 paper.

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Behavioural Attitude
A product of personal views; the individuals
attitude toward the behaviour(eg. How desirable THEORY OF PLANNED BEHAVIOUR
it seems to be).
· Attitude is formed on the basis of beliefs about · The TPB can be used not only to explain the processes that lead to
the consequences of performing the behaviour addiction but also as a way to understand prevention and treatment.!
(eg. I feel good) and an appraisal of these
consequences (eg whether they will be good or · It can be used to help develop appropriate programmes to bring about
bad). long-lasting changes in addiction behaviour.
Subjective Norms
· A product of social influences
· The individuals subjective awareness of `social Intention!
norms' relating to the behaviour eg. Not just You can change the
simply social norms but the individuals own beliefs attitude and make them
about what we think significant others feel is the aware of the Behaviour!
right thing to do (Injunctive norm) as well as consequences, have If all three are in order,
perceptions of what other people are actually greater understanding of addiction can be over-
doing (descriptive norm). the environment, who do ridden.
not present the addiction
and give participant
Perceived behavioural control
· Assumed to act either on the intention to behave in a
particular way, or directly on the behaviour itself. This
is because:
a) The more control people believe they have over the
behaviour, the stronger their intention to actually
perform the behaviour.
b) An individual with higher perceived control is likely to
try harder and to persevere for longer than someone
with low perceived behaviour control.

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Changing Subjective Norm!
MODELS OF PREVENTION: TPB · Anti-drug campaigns often aim to give adolescents actual data
THEORY OF PLANNED BEHAVIOUR about the percentage of people engaging in risky behaviour. !
· This is done to change the subjective norm.!
· Eg. Adolescents who smoke usually are part of a peer group
Changing Behavioural Attitude!
who smoke, therefore might think smoking is the norm.…read more



Great resource, very detailed !

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