The Reasoned Action Approach & The Theory of Planned Behavior презентация

The Reasoned Action Approach

Fishbein and Ajzen’s Theory of Reasoned Action Originally developed in 1967; further developed during the 1970’s. By the 1980’s, very commonly used to study human behavior Fishbein (U of I) and Ajzen (U Mass) were both working on similar concepts to explain human behavior, and eventually collaborated to create and publish the model in 1980.

Assumptions of the Model Human behavior is under the voluntary control of the individual People think about the consequences and implications of their actions behavior the decide whether or not to do something. Therefore, intention must be highly correlated with behavior. Whether or not a person intends to perform a health behavior should correlate with whether or not they actually DO the behavior

Components of the Model Behavior is a function of 2 things: Attitudes toward a specific action What will happen if I engage in this behavior? Is this outcome desirable or undesirable Subjective norms regarding that action Normative beliefs: others expectations Motivation to comply: do I want to do what they tell me? How much? Why?

Theory of Reasoned Action (Ajzen & Fishbein (1980) ) Behavioral beliefs means person’s opinion about positivity or negativity of this kind of behavior. Behavioral beliefs forms attitude toward the behavior. Normative beliefs means person’s opinion about others peoples’ opinion about this kind of behavior. Normative beliefs form subjective norm.

The Theory of Planned Behavior Ajzen (1991)

The Theory of Planned Behavior Ajzen (1991)

Background Factors

References to TPB in Google Scholar

Theory of Planned Behavior: Sample Applications

Direct Assessment of TPB Components

Nature of the Theory’s Components

Nature of the Theory’s Components

Intention

Nature of the Theory’s Components

Instrumental vs. Experiential Attitudes

Nature of the Theory’s Components

Injunctive vs. Descriptive Norms

Nature of the Theory’s Components

Capacity vs. Autonomy Aspects of Perceived Control

Drinking Alcohol: TPB Attitude Measure (5-point scales) - Ajzen, Joyce, Gilbert Cote, & Sheikh (2011) For me to drink alcohol this semester would be… 1. Very unpleasant --- Very pleasant 2. Extremely undesirable --- Extremely desirable 3. Extremely bad --- Extremely good 4. Drinking alcohol this semester is something I would Strongly dislike --- Strongly like  = .92

Drinking Alcohol: TPB Subjective Norm Measure (5-point scales) 1. People whose opinions I care about approve of my drinking alcohol this semester. 2. People who are close to me would approve of my drinking alcohol this semester. 3. Most people who are important to me will drink alcohol this semester. 4. People who are close to me expect me to drink alcohol this semester. Strongly disagree --- Strongly agree  = .85

Drinking Alcohol: TPB Perceived Behavioral Control Measure 1. If I wanted to, I could easily drink alcohol this semester. Strongly disagree --- Strongly agree 2. For me to drink alcohol this semester is Very impossible --- Very possible 3. It will be difficult for me to drink alcohol this semester. Strongly disagree --- Strongly agree 4. I should have no trouble drinking alcohol this semester. Strongly disagree --- Strongly agree  = .71

Drinking Alcohol: TPB Intention Measure 1. I am planning to drink alcohol this semester. Strongly disagree --- Strongly agree 2. I intend to drink alcohol this semester. Definitely will not --- Definitely will 3. I will probably drink alcohol this semester. Definitely will not --- Definitely will 4. I expect I will drink alcohol this semester. Strongly disagree --- Strongly agree  = .98

Drinking Alcohol: Current Behavior Measure 1. Please rate how often you drink alcohol Never 1 2 3 4 5 6 7 Virtually every day 2. How many drinks do you typically consume on one occasion? ________ drinks 3. How would you describe yourself in terms of your current use of alcohol? _____ abstainer _____ moderate drinker _____ infrequent drinker _____ heavy drinker _____ light drinker _____ chronic alcohol abuser 4. On how many occasions have you had one or more drinks in the past 30 days? _____ none _____ 6 to 9 occasions _____ 1 to 2 occasions _____ 10 to 15 occasions _____ 3 to 5 occasions _____ more than 16 occasions  = .79

Sample Application: Physical Activity With Spinal Cord Injury – Latimer & Martin Ginis (2005)

Sample Application: Not Smoking (Godin, Valois, Lepage, & Desharnais, 1992)

Sample Application: Driving After Drinking (Armitage, Norman, & Conner, 2002)

TPB: Donating Blood (Giles & Cairns, 1995)

TPB: Energy Conservation (Ajzen, Joyce, Sheikh, & Gilbert Cote, 2011 )

Meta Analysis – Mean Correlations (K =185) (Armitage & Conner, 2001)

Changing Intentions and Behavior

Behavior Change Interventions: Uses of the TPB Motivating people to engage in a behavior Influencing intentions. Helping people implement their intentions Overcoming obstacles to performance of the behavior. Evaluating the success or failure of the intervention Tracing the effects of the intervention as mediated by the TPB’s predictor variables.

Influencing Intentions Intentions can be modified by changing the major determinants of intentions: Attitudes, subjective norms, and/or perceptions of behavioral control

Getting Information About Accessible Behavioral, Normative, and Control Beliefs Elicit accessible beliefs using open-ended questions Outcome evaluations: Advantages & disadvantages; likes and dislikes associated with the behavior Normative referents: People or groups who approve or disapprove; perform or do not perform the behavior Control factors: Factors that make performance of the behavior easier or more difficult Construct lists of accessible personal or modal behavioral, normative, and control beliefs

Designing and Pretesting the Intervention The TpB provides general guidelines and suggests possible target beliefs. Designing the details of an effective intervention depends on the investigator’s experience and creativity. Possible approaches Persuasive communication (ads, flyers, lectures) Face-to-face discussions Pretesting to establish that the intervention influences the beliefs it was designed to change, and that it does not have unanticipated (and undesirable) impact effects on other beliefs

Evaluating Intervention Effectiveness by Means of the TPB

Taking the Bus to/from Campus (Bamberg, Ajzen, & Schmidt, 2003) Population: College students at the University of Giessen, Germany. Behavior: Self-reported bus use to get to the campus.

Taking the Bus to Campus (Bamberg, Ajzen, & Schmidt, 2003)

Taking the Bus to/from Campus (Bamberg, Ajzen, & Schmidt, 2003) Intervention: Prepaid semester bus ticket, accompanied by an extensive informational campaign.

Taking the Bus to Campus: Intervention Outcomes (Bamberg, Ajzen, & Schmidt, 2003)

Individual Social Capital and the Implementation of Entrepreneurial Intentions: the case of Russia

Figure 1. The theoretical mechanism of the influence of individual social capital on the intention to open one’s own business

Sampling procedure Sampling procedure 1) We ordered a survey to Institute for Comparative Social Research Ltd. (CESSI, Russia) in the third quarter 2012. The CESSI applied a multistage (3-stage) area sample. 2) The effective total sample size was 2,061 respondents: - 1,024 respondents where interviewed in the Central Federal District including Moscow - 1,034 respondents where interviewed in the North Caucasian Federal District.

3) Furthermore, those respondents were selected from this sample, those who were (or not) planning to start a new business in the next 2 years. 3) Furthermore, those respondents were selected from this sample, those who were (or not) planning to start a new business in the next 2 years. For this purpose the respondents were asked the following question: “Are you thinking about starting your own business within the forthcoming two years?” The options of answers were following: “Yes”, “Maybe/Not sure” and “No”. - The sample of “intenders” (n=269) included those respondents who answered this question either “Yes”, or “Maybe/Not sure”.

Entrepreneurial behavior evaluation using the TPB. Entrepreneurial behavior evaluation using the TPB. Behavior intention was measured by 2 items: “How likely is it that you would start a business within the forthcoming two years?” (Very unlikely: -3-2-1 0 1 2 3 Very likely) “I expect to start a new business within the forthcoming two years” (Strongly disagree: -3-2-1 0 1 2 3 Strongly agree).

We measured behavioral attitude (α=0.86) using two statements: (1) “The idea of starting a business within the next two years is for me...” with answers ranging on a 7-point Likert scale from “very inappropriate” (-3) to “very appropriate” (2); “The idea of starting a business within the next two years is for me...” with answers ranging on a 7-point Likert scale from “very bad” (-3) to “very good” (3) . We measured subjective norm (α=0.60) using two items: (1) “Most people who are important to me think I should start my own business within the next two years”; (2) “Many people I know would like to start their own business in the next two years.” For both questions answers ranged on a 7-point Likert scale from “strongly disagree” (-3) to “strongly agree” (3).

We measured perceived behavioral control (α=0.93) using two items: We measured perceived behavioral control (α=0.93) using two items: “For me to start a business within the next two years is...” with answers ranging on a 7-point Likert scale from “very difficult” (-3) to “very easy (3); (2) “To start a business within the next two years is beyond my control” with answers ranging on a 7-point Likert scale from “strongly disagree” (-3) to “strongly agree” (3)(reverse coded).

We measured implementation intention (α=0.73) using three items: “Have you thought about an idea that could serve as a basis for starting your own company?” 1- No, I don’t have any idea yet; 2- I don’t have a certain idea, only general thoughts; 3- I have some ideas, but they are not clear yet; 4- I have an idea, but it still requires elaboration; 5- Yes, I have a specific well thought-out idea);

We measured implementation intention (α=0.73) using three items: (2) “Are you currently developing a product/service?” with answers ranging on a 5-point Likert scale from “No, I am not” (1)-- to-- “I have been actively doing this/have already done this” (5); (3) “Are you currently saving money for your intention to start a business?” with answers ranging on a 5-point Likert scale from “No, I am not” (1) --- to --- “I have been actively doing this/have already done this.” (5).

2. Individual social capital. 2. Individual social capital. Resources, which can be received from informal networks (friends and family): from receiving help in house repair to legal and financial assistance (Häuberer, 2011; Gaag, 2005; Verhaeghe & Tampubolon, 2012). This method shows how many family members and how many friends/acquaintances do the respondent have who are willing “to help him/her with small repairs in he/her house or flat,” “to advise him/her in case of personal problems,” “to advise him/her about legal or bureaucratic problems,” “to help him/her or another family member to find a job”. etc.

2. Individual social capital. 2. Individual social capital. The size of formal networks: membership in organizations and associations (Yang, 2007; Beilmann & Realo, 2012; Häuberer, 2011). We measured the formal network of organizational membership by asking the respondent about his/her membership to political party, trade union, professional association, church, religious, charity organizations, public beneficial organization, sport or interest organization, civic associations, non-governmental organization that he/she belongs to (cf. Häuberer, 2011).

The measures of goodness of global fit satisfactorily for Model: The measures of goodness of global fit satisfactorily for Model: (χ2 /df = 2.1; CFI =.961; RMSEA = 0.064; PCLOSE = 0.117).