Theory of Planned Behavior (TPB) Flashcards
Theory of Planned Behavior (TPB)
- predecessor?
- assumption?
- links?
- type of model?
- keystone
Extension of Theory of Reasoned Action (TRA)
- assumption: people are likely to do what they intend to
links beliefs & behavior (behavior guided by 3 types of beliefs)
A deliberative-processing model
→attitudes are formed after consideration of available info
- keystone = willful behavior
- most behaviors are largely under volitional control
Intentions (3)
motivational factors that impact behavior
indications of:
- how hard people are willing to try
- how much effort they are planning to exert
remain behavioral dispositions (attitude of mind) until appropriate time/opportunity
- attempt is made to translate into action
Willful Behavior
Keystone to TPB
- behavior as a direct result of deliberate attempt by individual
TRA vs. TPB
TPB added variable of percieved behavioral control
According to TPB, health behaviors are?
a direct result of behavioral intention, which is made up of 3 components
Behavioral Intention
→ motivational factors that influence behavior
- immediate antecedant of health behavior
- made up of (3) components
Behavioral Intention
- (3) components
1) Attitudes
2) Subjective Norms
3) Percieved Behavioral Control
1) Attitudes towards behavior
degree to which a person has favorable/unfavorable evaluation of behavior
involves consideration of potential outcomes
2) Subjective Norms
belief of whether most people approve/disapprove of behavior
→ (percieved social pressure)
3) Percieved Behavioral Control
perceived control over behavior (ease/difficulty of performing behavior)
- reflects obstacles & successes encountered in past experiences with behavior
- varies across situations & actions
Principle of Compatibility
holds that each attitude & behavior has (4) elements:
a) Action
b) Target
c) Context
d) Time
correspondance between attitude & behavior is greatest when both are measured at same degree of specificity with respect to each element
Principle of Compatibility
- holds that each attitude & behavior has (4) elements
ACTION (behavior)
performed on/towards TARGET
in particular CONTEXT
and at specific TIME (occasion)
Importance of Principle of Compatibiltiy
In study of health behaviors, it is repeat performance of a single behavior across context & time that we wish to predict
Description of TPB Model
- Main Goal?
Identifying determinants of behavioral intentions
Description of TPB Model
- Main Assumption?
human beings usually behave in a sensible manner
Description of TPB Model
- States that?
behavioral achievement depends on both:
motivation (INTENTION) & ability (behavioral control)
Link between BELIEFS & BEHAVIOR
human behavior is guided by 3 kinds of considerations (beliefs), which influence intentions through attitudes, subjective norms & percieved behavioral control
(3) Types of Beliefs
a) Behavioral
b) Normative
c) Control
a) Behavioral Beliefs
beliefs about likely conseqeuences of behavior
- produce ATTITUDES (favorable/unfavorable) towards behavior
b) Normative Beliefs
beliefs about normative expectations of others
- result in perceived social pressure (SUBJECTIVE NORM)
c) Control Beliefs
beliefs about presence of factors that facilitate/impede performance of behavior
- result in PERCEIVED BEHAVIORAL CONTROL
Key Constructs (6)
1) Attitudes
2) Behavioral Intention
3) Subjective Norms
4) Social Norms
5) Percieved Power
6) Perceived Behavioral Control
Percieved Power
percieved presence of factors that facilitate/impede performance of behavior
- contributes to PBC over these factors
What (5) factors combine to produce Behavioral Intention & ultimately behavior change?
Attitudes
Subjective Norms
Social Norms
Percieved Power
Percieved Behavioral Control
Behavioral Intention
- represents?
one’s motivation (conscious plan), decision or self-instruction to perform target behavior
Studies → Intentions & Actions (Behavior)
Findings that intentions are closely linked to volitional actions & can predict with high degree of accuracy
- however, this is not always the case
Studies → Intentions & Actions (Behavior)
Intentions are closely linked to willful behavior & can predict them with high degree of accuracy
- However, this is not always the case → Explain
Longer time intervals increase likelihood that unforeseen events will change intentions
Feedback can significantly reduce accuracy with which intentions predict behavior
Summary of TPB Research (5)
- (4) limitations
predicts broad range of health behaviors
Not good at:
- explaining spontaneous behavior changes
- predicting long-term behavior change
Communications designed to change attitudes can evoke defensive/irrational processes
tends to overlook emotional variables (threat, fear, mood,
Bipolar Adjective Scale
Scale used to assess TPB major constructs
- attitudes, percieved norms, percieved behavioral control & intention
