theory of planned behavior steven brantley 9 october 2014 h 571 – principals of health behavior

THEORY OF PLANNED BEHAVIOR

Steven Brantley

9 October 2014

H 571 – Principals of Health Behavior

Theory of Reasoned Action• Basis for the Theory of Planned Behavior

• Attitude• Belief and evaluation of the behavior

• Subjective norms• Opinions of others and motivation to comply

Theory of Planned Behavior

Perceived Behavioral Control• Objective realities interpreted by individuals

• External factors• “Will and skill”• Varies greatly between people• Can be vastly different than reality

• Perceived Behavioral Control can greatly outweigh the other two constructs

Control Beliefs• Can I affect the outcome in question?

• Facilitating and inhibiting factors

• Beliefs ≠ Reality

Perceived Power• Strength of each facilitating or inhibiting factor

• Example• A man trying to quit smoking• Support from his wife and knowledge of the detriments of smoking

fulfill the TRA• However the strength of his addiction and cost of smoking

cessation are inhibiting factors with immense perceived power

Theory of Planned Behavior Example• An alcoholic is considering quitting drinking

• Known negative health outcomes• Behavioral belief and personal evaluation of outcomes

• Positive pressure to quit from spouse and some friends, negative pressure from co-workers and other friends• Normative beliefs, hold different weight

• Resources to quit are readily available, and they are motivated despite the addiction• External and internal perceived control factors

So where does this theory

fit in the TTI?

DECISIONS/INTENTIONS

SOCIAL SITUATION

BIOLOGY/PERSONALITY

THE THEORY OF TRIADIC INFLUENCE

ATTITUDESTOWARD THE

BEHAVIOR

SOCIALNORMATIVE

BELIEFS

Trial Behavior

EXPERIENCES: Expectancies -- Social Reinforcements -- Psychological/Physiological

SELF-EFFICACYBEHAVIORAL

CONTROL

Nurture/CulturalBiological/NatureIntrapersonal Stream Social/Normative Stream Cultural/Attitudinal Stream

Values/Evaluations

Knowledge/Expectancies

PerceivedNorms

Information/Opportunities

InterpersonalBonding

SocialCompetence

Interactions w/Social Instit’s

Others’Beh & Atts

Motivationto Comply

Skills:Social+General

Sense ofSelf/Control

SelfDetermination

1 2 3

7 8 9 10 11 12

13 14 15 16 17 18

l

4 5 6

19 20 21

22

23

DistalInfluences

ProximalPredictors

Levels ofCausation

UltimateCauses

Social/Personal Nexus

Expectancies & Evaluations

Affect andCognitions

Decisions

Experiences

Related BehaviorsJ

K

CULTURALENVIRONMENT

Prenatal Drug Use Example• Attitude Towards Behavior

• Subjective Norms

• Perceived Behavioral Control


• Known negative health outcomes• Don’t care because of strong addiction, altered neural pathways

• Subjective Norms




• Subjective Norms• Stigmatized, but common in the population• Families are often users too, no pressure to comply




• Subjective Norms• Stigmatized, but common in the population• Families are often users too, no pressure to comply

• Perceived Behavioral Control• Difficult to enroll in treatment• Effective live-in programs are very expensive• Addiction magnifies these inhibitors

Information, Motivation, Skill Model• Similar to the Theory of Planned Behavior

• Information• What do I know (like belief/evaluation for attitude)

• Motivation• Do I want to make a change (like attitude and subjective norms)

• Skill• Am I capable of making change (like perceived behavioral control)

Comments or Questions?

theory of planned behavior steven brantley 9 october 2014 h 571 – principals of health behavior

Documents

behavioral control slide

control beliefs

immense perceived power

social reinforcements

cultural e nvironment

perceived power strength

friends normative beliefs

strong addiction