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Predicting nurses' intention to quit with a support vector machine: a new approach to set up an early warning mechanism in human resource management.

This project developed a Support Vector Machine for predicting nurses' intention to quit, using working motivation, job satisfaction, and stress levels as predictors. This study was conducted in three hospitals located in southern Taiwan. The target population was all nurses (389 valid cases). For cross-validation, we randomly split cases into four groups of approximately equal sizes, and performed four training runs. After the training, the average percentage of misclassification on the training data was 0.86, while that on the testing data was 10.8, resulting in predictions with 89.2% accuracy. This Support Vector Machine can predict nurses' intention to quit, without asking these nurses whether they have an intention to quit.

Adult↗

PubMed2003

Planning and representing intentional action.

This paper reviews recent approaches to human action planning and the cognitive representation of intentional actions. Evidence suggests that action planning takes place in terms of anticipated features of the intended goal, that is, in terms of action effects. These effects are acquired from early infancy on by registering contingencies between movements and perceptual movement outcomes. Co-occurrence of movements and effects leads to the creation of bidirectional associations between the underlying internal codes, thus establishing distributed perception-action networks subserving both perceiving external events and intentionally producing them. Action plans determine only the general, goal-relevant features of intended actions, while the fine-tuning is left to on-line sensory-motor processing. Action plans emerge from competition for action control between several factors: overlearned habits, perceptual events, and emotional influences, among others. Accordingly, action control represents a balance between personal intentions and wishes on the one hand and environmental affordances and demands on the other.

Animals↗

PubMed2002

Visual search is modulated by action intentions.

The influence of action intentions on visual selection processes was investigated in a visual search paradigm. A predefined target object with a certain orientation and color was presented among distractors, and subjects had to either look and point at the target or look at and grasp the target. Target selection processes prior to the first saccadic eye movement were modulated by the different action intentions. Specifically, fewer saccades to objects with the wrong orientation were made in the grasping condition than in the pointing condition, whereas the number of saccades to an object with the wrong color was the same in the two conditions. Saccadic latencies were similar under the different task conditions, so the results cannot be explained by a speed-accuracy trade-off. The results suggest that a specific action intention, such as grasping, can enhance visual processing of action-relevant features, such as orientation. Together the findings support the view that visual attention can be best understood as a selection-for-action mechanism.

Adult↗

PubMed2005

Parents' intentions to use paediatric nurse practitioner services in an emergency department.

AIM: This paper reports on a study investigating the factors which influence parental intent to use the services of a paediatric nurse practitioner in an emergency department. BACKGROUND: Research has shown that nurse practitioners provide quality care to paediatric and adult primary care and non-urgent emergency patients. Although there are studies that assess patient satisfaction with nurse practitioner care, there are few that report on what factors initially influence the public to use these services. No studies have examined the factors that affect parental decision-making to access nurse practitioner care in emergency settings for their children. METHODS: A questionnaire was completed by 100 parents who visited a tertiary paediatric emergency department for their child's non-urgent emergency care needs. Information captured included demographic variables, role responsibility tasks that parents would be willing to have a nurse practitioner provide, and parents' perceptions of the characteristics of the nurse practitioner role. Descriptive statistics and logistic regression were used to analyse the demographic data, percentiles were compiled for the role responsibility tasks, and logistic regression was used to analyse parents' perceptions of the characteristics of the nurse practitioner role. The data were collected in 2002. RESULTS: Eighty-three per cent of parents indicated their intention to access nurse practitioner services for a variety of childhood symptoms. Logistic regression revealed that the compatibility of nurse practitioner services with parents' beliefs and needs was the most statistically significant (P < 0.05) independent variable predicting parental intent to use these services. Demographic variables did not have a statistically significant influence. CONCLUSIONS: The public does not seem to understand fully the scope of nursing practice, and this is a concern if people are to feel comfortable with expanded roles for nurses. Thus, the public should be given information that not only describes the role of nurse practitioners, but also includes facts about the scope of practice of Registered Nurses as this may be helpful in producing a favourable attitude towards nurse practitioner care.

Adolescent↗

PubMed2005

Doctors in vocational training: rural background and rural practice intentions.

OBJECTIVE: To report the findings of a national survey of Australian doctors in vocational training about their rural practice intentions and their plans to work full time or part time. DESIGN: A self-administered mailed survey. SETTING: Vocational training: general practice and other medical college training programs. SUBJECTS: Australian doctors (i.e. Australian citizens and permanent residents) registered with one of Australia's 17 medical college vocational training programs in September 2002. MAIN OUTCOME MEASURES: Intention to practise in a rural area on completion of vocational training; full-time or part-time practice plans; views about rural practice. RESULTS: Of the 7899 doctors who met the criteria for inclusion in the study, 4259 (54%) responded. In total:14% indicated a preference for rural practice on completion of vocational training; 17% were GP trainees of which 31% preferred rural practice; 83% were registered with one of the other 16 specialist training programs (e.g. adult medicine, paediatric medicine and surgery) of which 10% preferred rural practice; 50% of general practice trainees and 23% of trainees in other specialist training programs with a rural background indicated a preference for rural practice in the long term, compared with 25% and 7%, respectively, of doctors with an urban background; 46% of general practice trainees with intentions to practise in a rural area plan to practise part time. A positive association was observed between rural background and preference for rural practice (odds ratio (OR) 2.9) and between preference for rural practice and enrollment in the rural general practice training pathway (OR 3.1) and involvement in rural education and training activities (OR 5.1). CONCLUSIONS: The findings of this study support initiatives to increase the number of rural background students entering medical school and rural education and vocational training initiatives. Australia's rural doctor shortage is not likely to be addressed by this cohort of doctors in vocational training. General practice workforce plans, rural and urban, need to take note of the high proportion of doctors who plan to practise part time.

Adult↗

PubMed2006

Acting intentionally and the side-effect effect.

The concept of acting intentionally is an important nexus where theory of mind and moral judgment meet. Preschool children's judgments of intentional action show a valence-driven asymmetry. Children say that a foreseen but disavowed side effect is brought about "on purpose" when the side effect itself is morally bad, but not when it is morally good. This is the first demonstration in preschoolers that moral judgment influences judgments of whether something was done on purpose (as opposed to judgments of purpose influencing moral judgment). Judgments of intentionality are usually assumed to be purely factual. That these judgments are sometimes partly normative-even in preschoolers-challenges current understanding. Young children's judgments regarding foreseen side effects depend on whether the children process the idea that the character does not care about the side effect. As soon as preschoolers effectively process the theory-of-mind concept "not care that P," children show the side-effect effect.

Affect↗

PubMed2006

Intentions to participate in genetics research among African American smokers.

Although prior studies have shown that African American smokers are likely to carry some of the genetic variants associated with smoking risk, additional research with African American smokers is needed to replicate these findings. Limited information is available on interest in participating in research to identify genetic risk factors for smoking among African American smokers; therefore, the goals of the present study were to describe intentions to participate in smoking and genetics research, and to determine factors that are associated with participation intentions. Subjects were 128 African American male and female adult smokers. Sociodemographic characteristics, clinical factors, attitudes about genetic testing, and intentions to participate in genetics research were evaluated during a structured telephone interview. Overall, 58% of respondents reported that they would be very likely to participate in research to identify genetic risk factors for smoking. Greater beliefs about the benefits of participating in medical research (odds ratio, 3.17; 95% confidence interval, 1.45-6.94; P = 0.004) and fewer perceptions of the limitations and risks of genetic testing (odds ratio, 0.90; 95% confidence interval, 0.82-0.98; P = 0.01) had significant independent associations with reporting a high likelihood of participating in this type of research. Recruitment messages and protocols that address the benefits of research participation, as well as concerns about the limitations and risks of genetic testing, may enhance African American participation in research on genetics and smoking.

Adult↗

PubMed2007

Manipulating the experienced onset of intention after action execution.

Using transcranial magnetic stimulation (TMS), we have tested the time needed for the perceived onset of spontaneous motor intention to be fully determined. We found that TMS applied over the presupplementary motor area after the execution of a simple spontaneous action shifted the perceived onset of the motor intention backward in time, and shifted the perceived time of action execution forward in time. The size of the effect was similar regardless of whether TMS was applied immediately after the action or 200 msec after. The results of three control studies suggest that this effect is time-limited, specific to modality, and also specific to the anatomical site of stimulation. We conclude that the perceived onset of intention depends, at least in part, on neural activity that takes place after the execution of action. A model, which is based on the mechanism of cue integration under the presence of noise, is offered to explain the results. The implications for the conscious control of spontaneous actions are discussed.

Evoked Potentials, Motor↗

PubMed2006

Intention to register as organ donors: a survey of adolescents.

BACKGROUND: Little is known about factors that influence the intention of adolescents to register as organ donors. The identification of such factors has important implications for the development and implementation of educational programs and subsequent donor registration rates. OBJECTIVE: To determine whether adolescents with an expressed commitment to becoming organ donor registrants differ significantly from nondonors on sociodemographic characteristics and factors influencing their decision. PARTICIPANTS: Four hundred forty-five adolescents visiting a Department of Motor Vehicles office for a permit or license (n=153) or attending a driver's education course (n=292) completed a semistructured interview and questionnaire. RESULTS: Female (52.6%) and white (55.8%) adolescents were more likely to have favorable donation intentions relative to male (45.6%) and nonwhite (39.0%) adolescents (chi2 = 7.5, P = .02, and chi2 = 19.7, P = .003, respectively). Those with favorable donation intentions also endorsed significantly more positive factors (benevolence, need awareness, existentialism) as being more important in their decision. Adolescents who did not want to donate (58.7%) and those who were undecided (23.1%) were less likely to have discussed their decision with parents than were those who wanted to donate (67.7%, chi2 = 63.6, P = .0001). Finally, providing adolescents with a free driver's license in exchange for organ donor registration would have the greatest impact on registering undecided adolescents (29.8%, chi2 = 33.2, P = .0001). CONCLUSIONS: There is a pressing need for more systematic and culturally sensitive organ donation education directed toward adolescents, and the Department of Motor Vehicles and driver's education courses may be appropriate venues. An educational program from the U.S. Department of Health and Human Services, Decision: Donation, could be used in this context.

Adolescent↗

PubMed2006

Factors affecting mammography behavior and intention among Korean women.

PURPOSE/OBJECTIVES: To understand factors that influence the mammography experience and intention to receive mammography among Korean women using the Health Belief Model and subjective norm of the Theory of Reasoned Action. DESIGN: Cross-sectional. SETTING: Two university hospitals and one general hospital in Korea. SAMPLE: A convenience sample of 310 women aged 30 years and older who visited participating hospitals during the data collection period. METHODS: Self-administered questionnaire. MAIN RESEARCH VARIABLES: Perceived susceptibility and severity, perceived benefits and barriers, self-efficacy, normative beliefs, and motivation to comply. FINDINGS: Age, self-efficacy, and perceived susceptibility were significantly associated with participants' mammography experience, whereas knowledge, self-efficacy, perceived susceptibility, perceived barriers, subjective norm, and income were significant in predicting women's intention to receive mammography. CONCLUSIONS: The combined model synthesizing the Health Belief Model and the Theory of Reasoned Action was more effective in predicting mammography intention than in explaining mammography experience. IMPLICATIONS FOR NURSING: Tailored health education and health promotion programs to promote mammography screening among Korean women should be developed based on women's perceptions and norms.

Adult↗

PubMed2006

Augmenting the theory of planned behaviour with the prototype/willingness model: predictive validity of actor versus abstainer prototypes for adolescents' health-protective and health-risk intentions.

OBJECTIVES: The present research tested: (a) whether prototype perceptions and descriptive norms from the prototype/willingness model (PWM; Gibbons, Gerrard, Blanton, & Russell, 1998) enhance the prediction of adolescents' intentions to engage in health-protective and health-risk behaviours after variables from the theory of planned behaviour (TPB; Ajzen, 1991) and past behaviour have been taken into account and (b) whether images of the type of person who engages in a health behaviour (actor prototypes) and images of the type of person who does not engage in a health behaviour (abstainer prototypes) have equivalent predictive validity. DESIGN: An experimental design with a single between participants factor (actor versus abstainer prototype) was employed. METHOD: Participants in this study were 247 school pupils who completed measures of TPB variables, PWM variables and past behaviour in relation to three health-protective and three health-risk behaviours. RESULTS: Findings indicated that PWM variables accounted for a significant proportion of the variance in behavioural intentions after TPB variables and past behaviour had been taken into account (Mean deltaR2=.05). Perceived similarity to prototypes was the most consistent additional predictor of intention. Actor and abstainer prototypes exhibited equivalent predictive validity. CONCLUSIONS: The present research suggests that variables from the PWM, especially prototype similarity, enhance the predictive validity of the TPB. The findings also provide new evidence that acquiring the characteristics of both health and risk images may be goals among adolescents and suggest that both healthy and risky prototypes constitute useful cognitive targets for interventions.

Adolescent↗

PubMed2005

Pregnancy intention from men's perspectives: does child support enforcement matter?

CONTEXT: Most research on pregnancy intention has focused on women's perspectives and characteristics. Because decisions about sexual activity and contraceptive use usually involve both men and women, it is important to understand factors associated with men's intentions-for example, child support enforcement-to maximize the potential for reducing unwanted pregnancies. METHODS: Data from the 1982-2002 waves of the National Longitudinal Survey of Youth were used in multinomial logit analyses to examine the determinants of pregnancy intention from men's perspectives. RESULTS: Forty-six percent of pregnancies reported by never-married men were unwanted, compared with 21% of those reported by married men. Stronger child support enforcement was marginally associated with men's decreased likelihood of being involved in an unwanted pregnancy compared with no pregnancy (coefficient, -0.14) and of being involved in an unwanted pregnancy compared with a wanted pregnancy (-0.15). Without the improvement of child support enforcement over the survey period, the rate of unwanted pregnancies would have been an estimated 7% higher than the observed rate. CONCLUSIONS: Strengthening child support enforcement may have a positive impact on preventing unwanted pregnancies. Programs designed to reduce unwanted pregnancies and nonmarital births should include information on child support enforcement to increase their success.

Adolescent↗

PubMed2005

Intention to lose weight, weight changes, and 18-y mortality in overweight individuals without co-morbidities.

BACKGROUND: Weight loss in the obese improves risk factors for cardiovascular diseases and diabetes. However, several studies have shown inconsistent long-term effects of weight loss on mortality. We investigated the influence on mortality of intention to lose weight and subsequent weight changes among overweight individuals without known co-morbidities. METHODS AND FINDINGS: In 1975, a cohort of individuals reported height, weight, and current attempts (defined as "intention") to lose weight, and in 1981, they reported current weight. Mortality of the 2,957 participants with body mass index > or = 25 kg/m2 in 1975 and without pre-existing or current diseases was followed from 1982 through 1999, and 268 participants died. The association of intention to lose weight in 1975 and actual weight change until 1981 with mortality was analysed while controlling for behavioural and psychosocial risk factors and hypertension as possible confounders. Compared with the group not intending to lose and able to maintain stable weight, the hazard ratios (with 95% confidence intervals) in the group intending to lose weight were 0.84 (0.49-1.48) for those with stable weight, 1.86 (1.22-2.87) for those losing weight, and 0.93 (0.55-1.56) for those gaining weight. In the group not intending to lose weight, hazard ratios were 1.17 (0.82-1.66) for those who did lose weight, and 1.57 (1.08-2.30) for those gaining weight. CONCLUSION: Deliberate weight loss in overweight individuals without known co-morbidities may be hazardous in the long term. The health effects of weight loss are complex, possibly composed of oppositely acting processes, and need more research.

Adult↗

PubMed2005

Young girls' expectancies about the effects of alcohol, future intentions and patterns of use.

OBJECTIVE: In recent years, rates of alcohol use among young female adolescents have been increasing. Despite such trends, little is known about the precursors of use and intentions to use alcohol among preadolescents. The current prospective study examines the prevalence and correlates of alcohol use, future intentions and alcohol-related expectancies among young girls from ages 8 to 10 years. METHOD: Alcohol use behaviors and attitudes were assessed annually over a 3-year period in a community sample of 1,161 preadolescent girls. The girls comprised the two oldest cohorts of the ongoing Pittsburgh Girls Study (N = 2,451). Data were collected via separate parent and child interviews conducted in the participants' homes. RESULTS: The prevalence of alcohol use without parental permission was less than 3% in any given year between ages 8 and 10. Most girls reported sipping only, and there was little continuity of use across assessments. Alcohol-related expectancies were predominantly negative during this period but decreased with age. Positive expectancies, however, increased, particularly among white girls. Early alcohol use was predicted by black race and peer use. Intentions to use alcohol were predicted by low levels of negative expectancies and peer use. CONCLUSIONS: This study adds to the knowledge of use of alcohol and the development of positive and negative alcohol-related expectancies in girls of elementary school age.

Alcohol Drinking↗

PubMed2006

The effects of fatal vision goggles on drinking and driving intentions in college students.

The present study was designed to examine the effectiveness of Fatal Vision Goggles in reducing intentions to drink and drive. Participants performed a field sobriety task and drove in a traffic simulator while wearing the goggles. A regression analysis was performed in order to predict changes in intentions to drink and drive, using typical drinking patterns, perceived likelihood of getting into a collision when drinking and driving, self efficacy, and driving independence as predictor variables. Results showed that drinking and driving intentions were reduced following the use of Fatal Vision Goggles among those that typically drink more during outings, among those that believe the likelihood of collisions when drinking and driving are greater, and among those less likely to drive to achieve independence and autonomy. These results indicate that Fatal Vision Goggles can be an effective tool in altering drinking and driving attitudes among drivers with specific attitudinal and personal characteristics.

Adolescent↗

PubMed2002

Scale construction for measuring adolescent boys' and girls' attitudes, beliefs, perception of control, and intention to engage in leisure-time physical activity.

Using the Theory of Planned Behavior as a framework, the Attitude to Leisure-time Physical Activity, Expectations of Others, Perceived Control, and Intention of Engage in Leisure-time Physical Activity scales were developed for use among high school students. The study population included 20 boys and 68 girls 13 to 17 years of age (for boys, M = 15.1 yr., SD = 1.0; for girls, M = 15.0 yr., SD = 1.1). Generation of items and the establishment of content validity were performed by professionals in exercise physiology, physical education, and clinical psychology. Each scale item was phrased in a Likert-type format. Both unipolar and bipolar scales with seven response choices were developed. Following the pilot testing and subsequent revisions, 32 items were retained in the Attitude to Leisure-time Physical Activity scale, 10 items were retained in the Expectations of Others scale, 3 items were retained in the Perceived Control Scale, and 24 items were retained in the Intention to Engage in Leisure-time Physical Activity scale. Coefficients indicated adequate stability and internal consistency with alpha ranging from .81 to .96. Studies of validities are underway, after which scales would be made available to those interested in intervention techniques for promoting positive attitudes toward physical fitness, perception of control over engaging in leisure-time physical activities, and good intentions to engage in leisure-time physical activities. The present results are encouraging.

Adolescent↗

PubMed2004

Understanding Air Force members' intentions to participate in pro-environmental behaviors: an application of the theory of planned behavior.

At a single installation, a cross section of 307 active duty Air Force members completed questionnaires to assess whether the theory of planned behavior was useful in explaining the service members' intentions to participate in three environmentally protective behaviors-recycling, carpooling, and energy conservation. While the individual tenets of the theory of planned behavior, i.e., attitude toward the behavior, subjective norms, and perceived control, accounted for differing amounts of variance in intentions, the results indicated that the intentions of these Air Force members to recycle, conserve energy, and carpool were moderately explained by the tenets of the theory of planned behavior collectively when the results of a multiple regression were analyzed.

Adolescent↗

PubMed2004

Knowledge and information in prediction of intention to play badminton.

The aim of this preliminary study was to investigate the contributions of knowledge and information to the prediction of students' intention to play badminton. The sample, 121 students (53 men and 68 women) 18-25 years of age, were beginning students in a semester badminton course. A questionnaire was completed before and after the course (4 mo.). Hierarchical regression analyses showed strong association between the examined variables of the Planned Behavior Questionnaire, specifically signifying that knowledge, information, attitudes, subjective norms, perceived behavioral control, role identity, and attitude strength could account for anticipation of intention towards playing badminton. Overall, systematic access to information and knowledge appeared to accompany relatively greater intentions.

Adolescent↗