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PubMed1990

Thinking about thinking in therapy: an examination of clients' understanding of their therapists' intentions.

Two therapists each provided 2 clients time-limited (10 sessions each) therapies. These were examined to discover relations between (a) clients' understanding of therapists' intentions and episode level outcome, (b) similarities and differences between the participants' valuing of different intentions, and (c) shifts in intentions valued from the beginning to the terminal phases of therapy. By using therapists' segmentation of sessions into episodes and a computerized Counselor Intention List, some positive relations between clients' understanding of counselor intention and episode impact were documented. Differences were found between therapists' and clients' valued intentions as were systematic shifts in valued intentions from beginning to end phases of therapy.

Adolescent↗

PubMed2002

The dynamics of intention retrieval and coordination of action in event-based prospective memory.

Event-based prospective memory requires responding to cues in the environment that are associated with a previously established intention. Some researchers believe that intentions reside in memory with an above baseline level of activation, a phenomenon called the intention superiority effect. The authors of this study predicted that intention superiority would be masked by additional cognitive processes associated with successful event-based prospective memory. These additional processes include noticing the cue, retrieving the intention, and coordinating intention execution with the ongoing activity. In 3 experiments, intention superiority was demonstrated by faster latencies to the ongoing activity on failed prospective trials and the existence of the additional processes was demonstrated by slower latencies on successful trials. This study demonstrates the importance of investigating the microstructure of the cognitive components involved with processing and responding to an event-based prospective memory cue.

Attention↗

PubMed2006

The intention superiority effect in motor skill learning.

Three experiments were conducted to determine if the intention to perform motor sequences in the future results in similar patterns of activation and inhibition as observed for verbal scripts. In Experiments 1 and 2, intention was induced by informing one group that they would be tested on the tasks following acquisition; the other group was not informed of the retention test. Recognition tests administered prior to and after the retention test indicated a strong intention superiority effect. However, intention instructions provided either at the end of acquisition (Experiment 1) or before acquisition (Experiment 2) failed to impact acquisition or retention performance of the motor sequences, but did influence the latency of responding on the retention test. Experiment 3 was designed to replicate the results of Experiments 1 and 2 using a within-subjects design and extend these findings to observation. The results indicated that intention instructions resulted in a strong intention superiority effect for both the physical and observational practice participants, but the performance on the intentional tasks was enhanced only for the observational practice group.

Adult↗

PubMed2003

Genetic counselling and the intention to undergo prophylactic mastectomy: effects of a breast cancer risk assessment.

Scientific reports suggest that women at risk for familial breast cancer may benefit from prophylactic mastectomy. However, few data are available about how women decide upon this clinical option, and in particular, what role an objective risk assessment plays in this. The purpose of the present study is to assess whether this objective risk information provided in genetic counselling affects the intention for prophylactic mastectomy. Additionally, the (mediating) effects of breast cancer worry and perceived risk are investigated. A total of 241 women completed a questionnaire before and after receiving information about their familial lifetime breast cancer risk in a genetic counselling session. Path analysis showed that the objective risk information had a corrective effect on perceived risk (beta=0.38; P=0.0001), whereas the amount of breast cancer worry was not influenced by the counselling session. The objective risk information did not directly affect the intention for prophylactic mastectomy. The intention was influenced by perceived risk after counselling (beta=0.23; P=0.002), and by the precounselling levels of perceived risk (beta=0.27; P=0.00025) and breast cancer worry (beta=0.32; P=0.0001), that is, higher levels of perceived risk and breast cancer worry imply a stronger intention for prophylactic mastectomy. A personal history of breast cancer did not directly influence the intention for prophylactic mastectomy, but affected women who had undergone a mastectomy as surgical treatment were more positively inclined to have a prophylactic mastectomy than women who had had breast-conserving therapy. The impact of objective risk information on the intention for prophylactic mastectomy is limited and is mediated by perceived risk. Important determinants of the intention for prophylactic mastectomy were precounselling levels of breast cancer worry and perceived risk, suggesting that genetic counselling is only one event in the entire process of decision making. Therefore, interventions aimed at improving decision making on prophylactic mastectomy should explicitly address precounselling factors, such as personal beliefs and the psychological impact of the family medical history.

Adult↗

PubMed2001

Intentional action.

AIM: The purpose of this paper is to present a concept analysis of intentional action. BACKGROUND: Intentional action is a relevant concept for nurses because health behaviour involves action by the client of care. In addition, nurses take action when they assist their clients. Intentional action is a type of action distinguished by the presence of specific developmental skills and by intent or purpose. DESIGN: This concept analysis reflects a comprehensive review of the action literature. FINDINGS: This review revealed two views of intentional action: as social behaviour and as self-regulated behaviour influenced by external and internal factors. Based on these findings, the antecedents and consequences of this type of action are identified and the process of action is described. CONCLUSIONS: The concept model illustrates the relationship of intentional action with external and internal factors and demonstrates its continuous nature. Areas for further inquiry include exploration of the effect of factors such as self-efficacy, motivation, self-esteem, managed care and reduced health care resources on intention and subsequent action; as well as the efficacy of nursing interventions designed to influence health behaviour such as health promotion education and treatment counselling.

Attitude of Health Personnel↗

PubMed2003

Intention tremor rated according to different finger-to-nose test protocols: a survey.

OBJECTIVES: To investigate the dependence of intention tremor rating scores on different finger-to-nose test (FNT) protocols, varying in arm position and the time the finger has to be kept on the nose, and to examine their relevance to function. DESIGN: Observational survey. Video recordings were made while patients performed the FNTs and functional tasks such as pouring water. SETTING: Three European rehabilitation centers in Belgium, Finland, and England. PARTICIPANTS: Twenty-six multiple sclerosis patients with intention tremor (avg age, 44.1y). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURE: Six examiners rated the degree of intention tremor by using the Fahn Tremor Rating Scale. RESULTS: Interrater reliability for rating intention tremor during the FNTs was high (kappa=.65-.74). Both the required arm position and time constraints affected the magnitude of intention tremor rating scores (mean rank, 2.27-2.95) and their functional relevance (rho=.70-.84). Intention tremor was scored the highest when the arm was lifted to 90 degrees of abduction at the shoulder and the subject was required to stabilize the finger on the nose. However, its functional relevance was lower compared with a more "functionally" executed FNT. CONCLUSIONS: The rating of intention tremor during the FNT depends on test instructions. A standardized protocol is needed.

Adult↗

PubMed1994

Visual perception of intentional motion.

A series of experiments were performed to investigate how motion sequences provide information about the intentional structure of moving figures or actors. Observers had to detect simulations of biologically meaningful motion within a set of moving letters. In the first two experiments a factorial design was used, with type of instruction as a between-subject factor and six movement parameters (number of items, speed and directness of target and distractors, and 'relentlessness' of target movement) as within-subject factor; in the final two experiments, the visibility of the goal towards which the target moved and the use of a tracking movement to distinguish the target were varied. In such displays search time increases with increasing number of stimuli. It was found that (a) the more direct the motion, the more likely it was to be interpreted as intentional; (b) intentional motion was much easier to detect when the target moved faster than the distractors than when it moved more slowly; (c) recognition of intentionality was impaired but not abolished if the goal towards which the target was moving was invisible; and (d) participants did not report intentional movement when the target was distinguished by brightness rather than the manner in which it moved. We argue that the perception of intentionality is strongly related to observers' use of conceptual knowledge, which in turn is activated by particular combinations of features. This supports a process model, in which intentionality is seen as the result of a conceptual integration of objective visual features.

Animals↗

PubMed2003

Reasoning about physical causality and other's intentions in schizophrenia.

INTRODUCTION: Several studies have shown that schizophrenic patients have impaired theory-of-mind skills involving the attribution of false beliefs and intentions to others. Despite the methodological difficulties of false belief protocols, experiments have concluded that the deficit is specific and cannot be explained in terms of a general cognitive impairment. The situation, however, remains unclear as far as the attribution of intentions to others is concerned. We propose the use of nonverbal control tasks based on physical causality to demonstrate the specificity of the impairment of attribution of intentions. METHODS: We compared the performances of schizophrenic patients and normal subjects on the attribution of intentions and on two control tasks involving physical causality (reasoning about the weight, location, speed, and the physical properties of objects). 25 schizophrenic patients and 25 healthy subjects participated in the study. Each subject was assessed under three conditions using comic strips: attribution of intentions, physical causality with characters, physical causality without characters. RESULTS: The performances of schizophrenic patients differed significantly from those of healthy subjects only in the attribution of intentions condition. This difference was also found when only subjects having optimal performances in physical logic were considered and when verbal IQ was considered as a co-variable. CONCLUSIONS: Nonverbal attribution of intentions to others is specifically impaired in schizophrenia. This conclusion is in agreement with recent neuroimaging findings.

Journal Article↗

PubMed2003

Differential brain activations during intentionally simulated and subjectively experienced paralysis.

INTRODUCTION: Distinguishing conversion disorder from malingering presents a significant challenge as the diagnosis ultimately depends on the patient's subjective report and the clinician's suspicion of an intention to deceive. Using hypnosis to manipulate the intentionality of movement inhibition in the same subjects, we used positron emission tomography (PET) to determine whether failure to move during intentionally simulated and subjectively experienced paralysis is mediated by different neural structures. METHODS: Using a within-subject design, 12 normal, hypnotised subjects were tested under two paralysis conditions during the same scanning session. Half of the scans were performed with the suggestion that the left leg was paralysed (subjectively experienced paralysis condition) and half with the leg normal but with the instruction that paralysis should be feigned (intentionally simulated paralysis condition). RESULTS: Relative increases in brain activation were seen in the right orbitofrontal cortex, right cerebellum, left thalamus, and left putamen during subjectively experienced paralysis compared to intentionally simulated paralysis, although a previously reported activation of the right anterior cingulate cortex was not seen. During intentionally simulated paralysis compared to subjectively experienced paralysis relative increases in brain activation were seen in the left ventrolateral prefrontal cortex, and a number of right posterior cortical structures. CONCLUSIONS: Our results suggest that subjectively experienced paralysis has a different neural basis to intentionally simulated paralysis. These findings have theoretical and clinical implications for malingering and related attempts to unravel the neuropsychological basis for conversion hysteria.

Journal Article↗

PubMed2004

Effects of healing intention on cultured cells and truly random events.

OBJECTIVE: To explore effects of healing intention and intentional space conditioning on the growth of cultured human brain cells and the distribution of truly random events. DESIGN: The experiment took place inside an electromagnetically and acoustically shielded chamber over a period of 3 days. On each day randomly selected flasks of human astrocytes in culture were exposed to healing treatments; an equal number of unexposed flasks served as controls. Intentional healing and space-conditioning mediations were repeatedly held inside the chamber over the course of the experiment to see if this activity would cumulatively enhance the efficacy of healing treatments. To monitor the environments for negentropic effects possibly associated with the healing intention, three truly random number generators were operated continuously throughout the duration of the experiment. OUTCOME MEASURES: For cell cultures, the outcome measure was the difference in mean colonies formed under healing intention versus control conditions, and the change in these differences over the 3-day experiment. For the random number generators, the outcome measure was the variance in the distribution of random numbers generated, compared to chance expectation. RESULTS: There was no overall difference in growth between treated and control cells. A treatment by day interaction indicated that treated cells grew more than control cells as the experiment progressed (p=0.02). The three random number generators deviated from chance expectation on the morning of the third day of the experiment (combined peak association with p=0.00009). CONCLUSIONS: Results were consistent with the postulate that healing intention, applied repeatedly in a given location, may alter or condition that site so as to enhance the growth of treated cell cultures compared to untreated controls. Repeated intentions also appear to be associated with a general increase in negentropy or statistical order.

Analysis of Variance↗

PubMed2004

Weight-loss intention in the well-functioning, community-dwelling elderly: associations with diet quality, physical activity, and weight change.

BACKGROUND: Many older adults desire to lose weight, yet the proportion with a health-related weight-loss indication, weight-loss strategies, and success is unknown. OBJECTIVE: We examined the associations of reported intention to lose weight with health-related indications for weight loss, diet quality, physical activity, and weight-loss success in well-functioning older adults. DESIGN: This prospective, community-based cohort included 2708 elderly persons aged 70-79 y at baseline. We determined indication for weight loss by using the modified National Institutes of Health guidelines, diet quality by using the Healthy Eating Index, and weight-loss intention and physical activity by using questionnaires. Measured weight change over 1 y was assessed. RESULTS: Twenty-seven percent of participants reported an intention to lose weight, and 67% of those participants had an indication for weight loss. Participants who reported a weight-loss intention were heavier than those who did not, had more depressive symptoms, and were more likely to be dissatisfied with their weight, regardless of weight-loss indication. Participants with an intention to lose weight reported better eating behaviors and a more active lifestyle than did participants without a weight-loss intention, independent of other health conditions. No significant difference in actual weight loss was found between participants intending and not intending to lose weight, regardless of indication for weight loss. CONCLUSIONS: Despite being associated with healthier behaviors, the intention to lose weight did not predict greater weight loss in this well-functioning elderly cohort. More attention needs to be focused on the necessity and efficacy of specific strategies for weight loss in older adults.

Aged↗

PubMed2003

Intentional overdose among heroin overdose survivors.

Previous studies have reported varying rates of intentional overdose among heroin overdose survivors. This article reports on the prevalence of intentional heroin overdose among a sample of overdose survivors in Melbourne, Australia. This is part of a larger study examining the risk factors associated with nonfatal overdose. The study involved interviews with 256 heroin overdose survivors successfully resuscitated by Melbourne Ambulance Service paramedics. A substantial minority (17%) of the sample indicated that they had ever had an intentional overdose, and 67% had one within the last 6 months (11% of the total sample). Of those who had ever intentionally overdosed, 21% did so at the overdose for which they were recruited into the study (4% of total sample). Self-reported reasons for intentional heroin overdose fell into two categories: precipitating events and emotional states prior to use. Intentional overdose appears to comprise a relatively low proportion of overall heroin overdoses. However, given the complexity of suicidal thought and behavior, it is possible that some heroin overdose survivors who report their overdose to be unintentional were in fact experiencing some degree of suicidal thinking at the time of the overdose. Future research could address the potentially ambiguous nature of some intentional heroin overdoses.

Adolescent↗

PubMed2002

Determinants of exercise intention and behavior in survivors of breast and prostate cancer: an application of the theory of planned behavior.

The purpose of this study was to evaluate the theory of planned behavior as a framework for understanding exercise intention and behavior in survivors of breast and prostate cancer. Participants were 83 survivors of breast and 46 survivors of prostate cancer who were diagnosed within the previous 4 years and had completed treatment. Each participant completed a mailed self-administered questionnaire that assessed exercise during the previous week, demographic and medical variables, and the theory of planned behavior. For survivors of breast cancer, regression analyses indicated that attitude, subjective norm, and perceived behavioral control explained 45% of the variance in exercise intention with attitude, subjective norm, and perceived behavioral control each uniquely contributing to intention. Furthermore, exercise intention explained 30% of the variance in exercise behavior; however, perceived behavioral control added no unique variance. For survivors of prostate cancer, attitudes, subjective norm, and perceived behavioral control explained 36% of the variance in exercise intention, but only perceived behavioral control made a significant unique contribution. Furthermore, intention explained 36% of the variance in exercise behavior; however, perceived behavioral control added no unique variance. Results suggest that nurses may use the theory of planned behavior as a model for understanding the determinants of exercise intentions and behavior in survivors of breast and prostate cancer.

Attitude to Health↗

PubMed2005

Faces of the nursing shortage: influences on staff nurses' intentions to leave their positions or nursing.

OBJECTIVE: The objective of this study was to examine the relationship between organizational commitment, job satisfaction, and nurses' intention to leave their current position or nursing. BACKGROUND: Because retention of nurses is a critical issue for acute care institutions, study of the predictors of nurses' intention to leave (position or nursing) is essential. Of interest in predicting intention to leave are both organizational commitment and job satisfaction. METHODS: A mailed survey was conducted in which 787 respondents completed measures of satisfaction, organizational commitment, and personal and institutional demographics. All instruments had reliability estimates ranging from alpha = .76 to .92. RESULTS: Predictive relationships were found between financial status, organizational commitment, job and professional satisfaction, and intent to leave their current position (R = 0.42) and between financial status, professional satisfaction, and intention to leave nursing (R = 0.45) CONCLUSIONS: Organizational commitment has implications for nurses' intention to leave their current position but not nursing. Aspects of work and professional satisfaction predict both the intention to leave current position and nursing. Retention programs need to be focused on both organizational commitment and work and professional satisfaction.

Adult↗

PubMed2000

Socio-demographic correlates of screening intention for colorectal cancer.

OBJECTIVE: To assess the relationship between socio-demographic factors and screening intention for colorectal cancer (CRC). METHODS: A cross-sectional survey of a random sample of 884 Queenslanders aged 40-80 years was conducted using a computer-assisted telephone interviewing system. The factors measured included socio-demographic characteristics, personal history of CRC, knowledge of others with CRC and perceived symptom status. Chi-squared and Monte Carlo estimates of Fisher Exact Tests were performed to determine the associations between socio-demographic factors and screening intention. In multivariate analyses, multinomial logistic regression (MNLR) was utilised to examine potential determinants of screening intention. RESULTS: 77.5% (95% CI 74.0%-80.7%) of the respondents indicated their intention to participate in CRC screening if it were recommended by their doctor or health authorities. The likelihood ratio chi-squared tests in the MNLR analyses show that age (chi(df = 6)2 = 15.0; p = 0.02), education (chi(df = 8)2 = 19.4; p = 0.01), perceived symptom status (chi(df = 4)2 = 22.9; p = 0.00), sex (chi(df = 2)2 = 4.5; p = 0.11), income (chi(df = 14)2 = 19.6; p = 0.14) and personal history of CRC (chi(df = 2)2 = 4.3; p = 0.12) were potential determinants of screening intention. Other socio-demographic factors, including country of birth, private health insurance status, Socio-economic Index for Areas, and Rural and Remote Areas Classification codes, were not associated with screening intention. CONCLUSIONS AND IMPLICATIONS: The results indicate that a variety of socio-demographic factors are associated with screening intention and need to be considered in the future development of a population-based screening program for CRC.

Adult↗

PubMed1994

Infant intentionality as object directedness: a method for observation.

It is argued that a definition of intentionality in terms of object directedness is more adequate than the traditional definition in terms of goal directedness. Inconsistencies in the use of "intentionality" among infant researchers are pointed out. A method of observation is explored, based on the definition in terms of behavioral object directedness, that takes into account precursors to fully-fledged intentional actions by approaching intentionality as a matter of degree rather than as an all or none issue. The method, when used on longitudinal video recordings of parent-infant interaction, produced results that substantiated Trevarthen's observations of infant intentionality before the age of six months. Furthermore, the results suggest that the parent's attribution of intentions to the infant is based on the perception of the infant's intentionality, whether in social interaction or in interaction with "physical" objects.

Attention↗

PubMed1998

Do intentions predict condom use? Meta-analysis and examination of six moderator variables.

This study used meta-analysis to quantify the relationship between intentions and behaviour in prospective studies of condom use. The effects of six moderator variables were also examined: sexual orientation, gender, sample age, time interval, intention versus expectation and condom use with 'steady' versus 'casual' partners. Literature searches revealed 28 hypotheses based on a total sample of 2532 which could be included in the review. Overall, there was a medium to strong sample-weighted average correlation between intentions and condom use (r+ = .44), and this correlation was similar to the effect sizes obtained in previous reviews. There were too few studies of gay men to permit meaningful comparison of effect sizes between homosexual versus heterosexual samples. Gender and measurement of intention did not moderate the intention-behaviour relationship. However, shorter time intervals, older samples and condom use with 'steady' rather than 'casual' partners were each associated with stronger correlations between intentions and condom use. Factors which might explain the significant effects of moderator variables are discussed and implications of the study for future research on intention-behaviour consistency are outlined.

Adolescent↗

PubMed1998

Dissociation of sensory-attentional from motor-intentional neglect.

OBJECTIVES: Spatial neglect may result from disruption of sensory-attentional systems that spatially allocate perceptual resources and the motor-intentional systems that direct exploration and action. Previous studies have suggested that the line bisection task is more sensitive to sensory-attentional disorders and the cancellation task to motor-intentional disorders. A new technique was developed that allows the dissociation of sensory-attentional and motor-intentional deficits in both tasks and thereby allows comparison of these tasks. METHODS: Ten patients with right hemispheric injury and hemispatial neglect performed line bisection and cancellation tasks while viewing stimuli on closed circuit TV. Direct view of the exploring hand and the target was precluded; the TV monitor guided performance. The direct condition made the direction of hand movement on the table (workspace) congruent with that on the monitor. Inverting the camera produced the indirect condition wherein the lateral movement in the workspace occurred in the opposite direction on the monitor. RESULTS: On the cancellation task, five patients marked targets in the right workspace in the direct condition but the left workspace in the indirect condition, indicating sensory-attentional neglect. However, four other patients cancelled targets only in the right workspace in both conditions, failing to explore the left workspace, suggesting motor-intentional neglect. A patient who performed ambiguously may have elements of both types of neglect. Only two out of five patients designated as sensory-attentional in cancellation tasks showed sensory neglect on line bisection. The other three patients, as well as patients defined as motor-intentional by cancellation performance, exhibited motor-intentional neglect on line bisection. CONCLUSION: The designation of sensory-attentional versus motor-intentional neglect therefore, in part, depends on task specific demands.

Adult↗