Learning to perceive as we wish to perceive.
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Emotions↗
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Results for “perceived”
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A TEST OF THE INVARIANCE OF THE RATIO OF PERCEIVED SIZE TO PERCEIVED DISTANCE.
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Depth Perception↗
[On the problem of the relation of perceived size to perceived distance].
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Distance Perception↗
[How is the physician perceived and how do practitioners believe they are perceived?].
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Adult↗
Perceived work conditions and work-related symptoms among employed Finns.
The aim of the study was to determine the number and nature of perceived harmful work conditions and perceived work-related symptoms among employed Finns by sex and socioeconomic group. The associations between perceived harmful work conditions and perceived symptoms were also investigated. Knowledge of perceived work-related ill health can serve as a basis for health promotion at work. In a computer-assisted telephone interview of 2744 salaried employees and wage-earners, the respondents were asked about perceived harmful work conditions as well as perceived health complaints, and their relatedness to work. At least one harmful factor at work was reported by 94% of the respondents, and half of them reported more than three such factors. The most commonly occurring harmful factors were increased work pace, mental demand, repetitive movements, and noise. Of the symptoms perceived as work-related, musculoskeletal symptoms were the most common. They were reported by 44% of the respondents, followed by mental symptoms (26%), psychosomatic symptoms (19%), and respiratory or sensory symptoms (15%). Both the reporting of perceived harmful work factors and perceived work-related symptoms varied by socioeconomic group and sex. Perceived work-related musculoskeletal symptoms were associated with perceived ergonomic harmful work factors among both the men and the women, with physical or chemical work factors among the men, and with psychosocial or work organizational factors among the women. Perceived work-related respiratory symptoms were associated with perceived harmful physical or chemical work factors among both the men and the women, and both groups also reported mental and psychosomatic symptoms in relation to harmful psychosocial or organizational work factors. Among the women psychosomatic symptoms and harmful ergonomic work factors were also related. Perceived harmful factors at work and work-related symptoms are common among the work force. Even though the degree of work-related ill health was related to socioeconomic group, the reporting of particular symptoms indicated the probability of a particular work factor being considered harmful independently of socioeconomic group, although there was some relationship to sex. The implications for occupational health services are evident; employees' work-related symptoms can serve as an indicator of (preventable) perceived problems at work.
Adult↗
Perceived control of asthma and quality of life among adults with asthma.
BACKGROUND: Perceived control of certain chronic conditions influences health status outcomes. OBJECTIVE: To explore the impact of perceived control of asthma on asthma-specific and generic health status outcomes among adults with asthma. Perceived control was defined as individuals' perceptions of their ability to deal with asthma and its exacerbations. METHODS: Data were drawn from the baseline and first two followups of a longitudinal study of adults with asthma surveyed by telephone at 18-month intervals. An 11-item questionnaire (Perceived Control of Asthma Questionnaire [PCAQ]) was developed and validated. RESULTS: The PCAQ demonstrated high internal consistency (Cronbach's alpha = 0.79). Greater perceived control was associated with less severe asthma, greater asthma self-efficacy, lower perceived asthma severity, lower perceived danger from asthma, and greater perceived usefulness of asthma medicines. Greater perceived control was significantly associated with better asthma-specific quality of life concurrently and 18 and 36 months later, after controlling for demographics, smoking, and severity of asthma. Greater perceived control as also significantly associated with generic mental health outcomes concurrently and 18 and 36 months later, after controlling for covariates. Perceived control was associated with physical function concurrently and 18 months later, but not 36 months later. CONCLUSIONS: The PCAQ is a reliable and valid measure of perceived control of asthma. Perceived control of asthma was associated with both asthma-specific and generic health status outcomes, concurrently and predictively. If perceived control could be modified, better outcomes, particularly better psychologic outcomes, might be achieved for individuals with asthma.
Adolescent↗
Perceived need for alcohol, drug, and mental health treatment.
BACKGROUND: To investigate determinants of perceived need for alcohol, drug, and mental (ADM) health treatment and differences in ADM treatment patterns between individuals with perceived need and those without. METHODS: We used data from a nationally representative telephone survey of 9585 adults conducted in 1997-1998. Logistic regression was used to study the determinants of perceived need and the correlation between perceived need and any ADM treatment, specialty ADM treatment, appropriate care, and medication adherence. RESULTS: Just fewer than 37% of individuals with an ADM disorder perceived a need for treatment, while 4.6% of those without an ADM disorder perceived a need for treatment. Women, the young and middle aged, the better educated, those with greater emotional support, and those with greater psychiatric morbidity were more likely to perceive need for ADM services. Perceived need was strongly correlated with receiving ADM treatment, although almost 44% of individuals in ADM treatment did not perceive a need for treatment. Among individuals in ADM treatment, those with perceived need were significantly more likely to receive specialty ADM treatment, but not more likely to be treatment adherent, or to receive appropriate care. CONCLUSION: Substantial levels of unmet need are likely to persist as long as perceived levels of need remain low. Interventions targeting perceived need may hold promise for decreasing unmet need.
Alcoholism↗
Associations between perceived parent behaviors and middle school student fruit and vegetable consumption.
OBJECTIVE: To examine whether (1) student perceptions of parent behaviors explain variations in fruit and vegetable consumption, (2) self-efficacy mediates this relationship, and (3) perceived home fruit and vegetable availability moderates this relationship. DESIGN: A cross-sectional survey. SETTING: Classrooms in 3 middle schools in 2 northeast Georgia counties. PARTICIPANTS: 366 middle school students. The response and participation rates were 59% and 56%, respectively. VARIABLES MEASURED: Perceived authoritative parenting, perceived parent control, perceived parent modeling, perceived parent support, self-efficacy, perceived fruit and vegetable availability, and fruit and vegetable consumption. ANALYSIS: Hierarchical multiple regression; P <.05. RESULTS: Perceived parent modeling, perceived parent support, self-efficacy, and perceived fruit and vegetable availability were significant predictors of fruit and vegetable consumption. The relationship between perceived parent support and fruit and vegetable consumption was mediated by self-efficacy. The relationship between fruit and vegetable consumption and both perceived parent modeling and support was moderated by perceived fruit and vegetable availability. CONCLUSIONS AND IMPLICATIONS: Parents appear to moderately influence middle school student fruit and vegetable consumption. Educators might focus on improving home fruit and vegetable availability and student self-efficacy, as well as parent support and modeling. The level of availability might indicate where efforts should focus for enhancing parent behaviors.
Adolescent↗
Perceived need for mental health care, findings from the Australian National Survey of Mental Health and Well-being.
BACKGROUND: The Australian National Survey of Mental Health and Well-being was designed to detect and describe psychiatric morbidity, associated disability, service use and perceived need for care. The survey employed a single-phase interview methodology, delivering a field questionnaire to a clustered probability sample of 10,641 Australians. Perceived need was sampled with an instrument designed for this survey, the Perceived Need for Care Questionnaire (PNCQ). This questionnaire gathers information about five categories of perceived need, assigning each to one of four levels of perceived need. Reliability and validity studies showed satisfactory performance of the instrument. METHODS: Perceived need for mental health care in the Australian population has been analysed using PNCQ data, relating this to diagnostic and service utilization data from the above survey. RESULTS: The survey findings indicate that an estimated 13.8% of the Australian population have perceived need for mental health care. Those who met interview criteria for a psychiatric diagnosis and also expressed perceived need make up 9.9% of the population. An estimated 11.0% of the population are cases of untreated prevalence, a minority (3.6% of the population) of whom expressed perceived need for mental health care. Among persons using services, those without a psychiatric diagnosis based on interview criteria (4.4% of the population), showed high levels of perceived met need. CONCLUSIONS: The overall rate of perceived need found by this methodology lies between those found in the USA and Canada. The findings suggest that service use in the absence of diagnosis elicited by survey questionnaires may often represent successful intervention. In the survey, untreated prevalence was commonly not accompanied by perceived need for mental health care.
Adult↗
The effects of objective and perceived size properties on visual form matching.
The present experiments examined the effect of perceived size on the time it takes to make veridical form judgments. Recent studies have demonstrated an increase in the time required to match forms, as a function of increasing size, orientation, contrast, or color differences between the forms to be matched. The increase in reaction time to match forms has been explained by suggesting that form perception and matching is dependent on the degree of difference that exists in the objective size of the forms to be matched. This conflicts with the generally accepted view that form matching is independent of irrelevant proximal stimulus properties. The key to this issue seems to be whether form perception depends on objective or perceived stimulus properties. Studies in this area all involve manipulations of the objective stimulus properties, thus making it difficult to examine the effects of perceived properties. The current series of studies decoupled objective and perceived size differences by employing an illusion. The results demonstrated that the time to match forms is a function perceived differences in the stimulus forms, not the differences that exist in the objective size of the forms to be matched. In Experiment 1 three conditions were employed: a plain background condition in which the forms to be matched were objectively and subjectively equal in size, a double-illusion condition in which the forms were objectively and subjectively equal in size, and an illusion condition in which the forms were objectively equal in size but perceived as unequal in size. The results indicated a significant increase in reaction time for the illusion condition in which the forms were perceived to be different sizes, compared to the other two conditions in which perceived and objective size were equal. Experiment 2 results converged with and replicated those of Experiment 1. In Experiment 2 perceived size was equated for each subject in the context of the size illusion, thus varying the objective size of the stimuli. This manipulation led to a significant decrease in reaction time in this added condition, as compared to the illusion condition from Experiment 1 in which objective size was equal and perceived size differed. The results of Experiment 2 were replicated in a third experiment. Experiment 3 replicated the decrease in reaction time noted in the perceptually equal illusion condition. The decrease between illusion conditions was also approximated by an increase in a plain background condition with objective size differences. Thus the effect of perceived size accounts for the additional time to match forms of unequal size. The conclusion drawn from this series of experiments is that the time required to make veridical form judgments depends on perceived differences in the forms to be judged, not on the objective properties of the proximal stimulus. Implications of these results on models of pattern recognition are examined.
Discrimination Learning↗
Perceived barriers to physical activity among high school students.
BACKGROUND: Perceived barriers to physical activity, the factor structure of perceived barriers, and the relationship between perceived barriers and participation in vigorous physical activity were examined. METHODS: A two-stage cluster sample of high school students (N = 1,041) in a large Metropolitan Toronto school district was used. Students completed a questionnaire (response rate 81.4%) dealing with participation in physical activity in three settings. Factor analysis was used to examine the dimensionality of perceived barriers. Multiple regression analysis was then used to examine the relationship between perceived barriers and participation. RESULTS: Time constraints due to school work, other interests, and family activities were three of the four barriers considered most important. Females cited consistently higher levels of perceived barriers than males. Two empirically distinct and theoretically meaningful factors emerged from the analysis--perceived internal barriers and perceived external barriers. Perceived internal barriers were predictive of physical activity in overall activity and outside of school activity. Perceived external barriers were predictive of overall physical activity and other school activity, but in the direction opposite to that hypothesized. CONCLUSIONS: It was concluded that perceived barriers may be predictive of physical activity participation among high school students only under specific conditions.
Adolescent↗
Factors associated with perceived health of very old inhabitants of Japan.
BACKGROUND: Perceived health or self-rated subjective health of the oldest inhabitants of Japan was studied to identify its associated impact on their lives. OBJECTIVE: The health status of the aged was evaluated to elucidate the correlation between their health complaints and perceived health status as expressed on a comprehensive rating scale. METHODS: A health questionnaire including the Todai Health Index (THI) was applied to 529 inhabitants of Central Japan, aged 85 years or older. THI is a symptom checklist composed of 130 questions. Twelve scale scores and two discriminant function values were calculated. Response rate was 99.8% (528/529). Other items included sex, age, prevalence of chronic disease and its treatment, marital status, academic career, and friendship. A question 'How is your health?' with five ordinal response options was used to assess perceived health. RESULTS: The mean values of THI scale scores of lie and aggression of poor (poor or extremely poor) perceived health were significantly lower than those of good (extremely good or good) perceived health. The mean values of other THI scale scores of poor perceived health except impulsiveness and nervousness in male subjects were significantly higher than those of good perceived health. Spearman's rank correlation coefficients between perceived health score and THI scale scores were all statistically significant. Furthermore, multiple logistic regression analysis was conducted to identify significant factors predicting perceived health. THI scale scores of physical symptoms, depressive state, and irregular daily life were significant. Odds ratios and 95% confidence intervals in parentheses on each factor were 1.15 (1.07-1.23), 1.14 (1.02-1.30), and 1.15 (1.02-1.30), respectively. CONCLUSIONS: Poor perceived health was significantly associated with irregular lifestyle, physical and mental complaints. Perceived health reflects the health status of the oldest inhabitants of Japan.
Aged↗
Interactive effects of perceived racism and coping responses predict a school-based assessment of blood pressure in black youth.
BACKGROUND: Research indicates that perceived racism and coping responses are associated with basal blood pressure (BP) levels and BP reactivity in Black adults. No study could be found, however, that has explored the independent and interactive effects of perceived racism and coping responses in a cohort who probably has the greatest risk of developing primary hypertension--Black youth. PURPOSE: This study examined the relationship of perceived racism and coping responses to a continuous measure of BP and to a categorical measure of BP status (normal vs. high-normal or high). METHODS: The convenience sample consisted of 217 Black youth (M age = 11.4 years, SD = 1.3). Participants reported on perceived racism and coping responses (Accepting It, Self-Blame, Taking Action, and Talking to Someone). BP was assessed with an automated monitor in school. RESULTS: Approximately 32% of the sample had average BP levels that were high-normal or high. Hierarchical linear and logistic regression analyses were used to assess the predictive utility of perceived racism and the four coping responses to the continuous and categorical BP assessments. Although perceived racism and the coping response variables did not emerge as significant independent predictors in the linear or logistic regression analyses, perceived racism interacted with Accepting It (p = .009) in the linear regression analysis predicting systolic BP. Follow-up linear regression analyses indicated that perceived racism was not significantly associated with systolic BP among participants low in Accepting It but was inversely related to systolic BP among participants high in Accepting It. Perceived racism also interacted with Accepting It (p = .016) and Talking to Someone (p = .0009) in the logistic regression analysis predicting BP status. Follow-up logistic regression analyses revealed that (a) perceived racism was not significantly associated with BP status among participants low in Accepting It but was inversely related to BP status among participants high in Accepting It, and (b) perceived racism was inversely associated with BP status among participants low in Talking to Someone but was not significantly related to BP status among participants high in Talking to Someone. CONCLUSIONS: The contribution of environmental and psychosocial factors to hypertension risk should be considered when exploring correlates of continuous and categorical assessments of BP in Black youth.
Adaptation, Psychological↗
Associations of body mass index and perceived weight with suicide ideation and suicide attempts among US high school students.
BACKGROUND: Previous research with adolescents has shown associations of body weight and perceptions of body size with suicide ideation and suicide attempts, but it is unclear whether these associations are direct or whether a mediating effect exists. OBJECTIVES: To determine if body mass index and perceived weight are associated significantly with suicide ideation and suicide attempts, controlling for weight control practices, and if perceived weight mediates the associations of body mass index with suicide ideation and suicide attempts. DESIGN, SETTING, AND PARTICIPANTS: Data were analyzed from the 2001 Youth Risk Behavior Survey, a school-based survey administered to a nationally representative sample of students in grades 9 through 12 (N = 13 601). MAIN OUTCOME MEASURE: Self-reported past-year suicide ideation and suicide attempts, compared by perceived weight and body mass index category, calculated from self-reported height and weight. RESULTS: Body mass index category was associated significantly with suicide ideation (among all students) and suicide attempts (among white and Hispanic students) without perceived weight in the model but not with perceived weight added to the model. In contrast with those who perceive themselves as about the right weight, students who perceived themselves as very underweight (odds ratio [OR], 2.29 [95% confidence interval (CI), 1.46-3.59]), slightly underweight (OR, 1.36 [95% CI, 1.03-1.79]), slightly overweight (OR, 1.33 [95% CI, 1.12-1.58]), and very overweight (OR, 2.50 [95% CI, 1.73-3.60]) had greater adjusted odds of suicide ideation. Among white students, perceiving oneself as very underweight (OR, 3.04 [95% CI, 1.40-6.58]) or very overweight (OR, 2.74 [95% CI, 1.21-6.23]) was associated with greater odds of suicide attempts. Perceiving oneself as very underweight was associated with greater odds for suicide attempts among black (OR, 2.86 [95% CI, 1.10-7.45]) and Hispanic (OR, 3.40 [95% CI, 1.54-7.51]) students. CONCLUSIONS: How adolescents perceive their body weight may be more important than their actual weight in terms of increased likelihood of suicidal behavior. Regardless of body mass index, extreme perceptions of weight appear to be significant risk factors for suicidal behavior; important racial/ethnic differences exist.
Adolescent↗
Uncertainty and perceived personal control among parents of children with rare chromosome conditions: the role of genetic counseling.
Little is known about the impact of genetic counseling on parental uncertainty or perceived control regarding the prognosis of a child with a chromosomal disorder. By exploring the parents' concerns and needs surrounding the child's diagnosis, a genetic provider can help to facilitate effective coping. This study tested the association of measures of parental uncertainty and perceived control with the perceived helpfulness of the genetic counselor. A survey was distributed to 875 members of the Chromosome Deletion Outreach (CDO) support group. We hypothesized that parents' perceptions about the helpfulness of the genetic counselor would modify the relationship between perceived uncertainty, perceived control, and coping. Among the 363 respondents, there was a significant negative correlation of the perceived helpfulness of seeing a genetic counselor with the levels of uncertainty (rs = -0.20, P-value < 0.001). Lower perceived helpfulness of the genetic counselor, along with less perceived personal control, less benefit of a diagnosis, and lower parental age were significant predictors of the highest perceptions of uncertainty. The Transactional Model of Stress and Coping was used as a framework for interpreting the relationships between parental uncertainty, perceived control, and outcome variables. There was a significant positive correlation between parents' perceived personal control and their reports of helpfulness of the genetic counselor (rs = 0.20, P-value <0.0006). Genetic counseling can be enhanced for parents faced with rare disorders by using interventions focused on reducing feelings of uncertainty and enhancing feelings of control.
Adaptation, Psychological↗
Reduction in perceived intensity of cutaneous stimuli during movement: a quantitative study.
The effect of movement of the index finger on the perceived intensity of trains of electrical stimuli to the digital nerves of the same finger was studied quantitatively using a novel intramodality stimulus-matching task. Subjects consistently were able to match reliably the perceived intensity of stimuli delivered on the 'reference' side with that of stimuli delivered simultaneously to the digital nerves of the index finger on the other ('matching') side. Both active and passive movement of the index finger (on the reference side) in the palmar plane reduced the matched stimulus voltage by about 10% of its control value for stimuli at twice the sensory threshold. This reduction in perceived intensity did not persist beyond the period of stimulation. An isometric contraction of first dorsal interosseous muscle produced a smaller, but statistically significant, reduction in perceived intensity. Non-noxious electrical stimulation of the digital nerves of the ipsilateral thumb or little finger also reduced the perceived intensity of stimuli to the index finger. Perceived intensity of stimuli during movement was also reduced, but to a lesser extent, when the index finger was stimulated at painful levels. Psychophysical studies using open magnitude scaling indicated that the relationship between stimulus intensity and perceived magnitude of electrical stimuli could be described by a power law with an exponent close to 1.0. Therefore, the percentage reduction in matching voltage accurately represents the percentage decline in perceived intensity. These results suggest that the perceived intensity of cutaneous stimuli to the index finger over a range of intensities can be reduced by afferent activity from the hand. The motor command appears to play a relatively minor role in modulating the perceived intensity.
Adolescent↗
Associations between perceived cancer risk and established risk factors in a national community sample.
INTRODUCTION: Perceptions of personal cancer risk may not accurately reflect individual's exposure to established risk factors. The purpose of this study was to assess associations between perceived cancer risk and selected established risk factors, using a large nationally representative sample. METHODS: We used data from the 2000 National Health Interview Survey (NHIS) to perform a cross-sectional analysis of 30,223 adults without a cancer diagnosis. Multinominal logistic regression analyses were used to assess factors associated with medium and high perceived cancer risk. RESULTS: The effects of age, family history, and smoking status on perceived risk were linear and more pronounced on those with high perceived risk. High perceived risk was associated with every day smoking (relative risk ratio [RRR] = 4.27, 95% confidence intervals [CI] = 3.65-5.01), alcohol consumption (e.g. RRR = 1.26, 95% CI = 1.01-1.56 for current drinker), number of relatives with cancer (e.g. RRR = 20.64, 95% CI = 16.37-26 for those with both parents positive), low income (RRR = 1.25, 95% CI = 1.08-1.45), and female (RRR = 1.39, 95% CI = 1.23-1.57). Obesity (RRR = 1.32, 95% CI 1.1-1.6), but not overweight, was identified as an independent determinant. High perceived risk was inversely related to age (e.g. RRR = 0.19, 95% CI = 0.16-0.24 for adults 60 and older). Ethnic minorities were less likely to perceive cancer risk. Physical inactivity was not associated with high perceived risk. CONCLUSIONS: Among established risk factors, family history appears to be most reflected in the single measure of perceived cancer risk. The relationship between perceived cancer risk and exposure to established risk factors differs in important ways from what public campaigns have communicated with the public. Prevention messages should highlight that cancer risk increases with age and certain modifiable risk factors, including overweight and physical inactivity. The relationship between cancer risk perceptions and ethnicity merits further exploration.
Adult↗
AIDS health beliefs and intention for sexual abstinence among male adolescent students in Kathmandu, Nepal: a test of perceived severity and susceptibility.
OBJECTIVES: In Nepal, male adolescent students are at high risk for infection with human immunodeficiency virus (HIV) because of their risky sexual behaviours. This study examined whether two subscales of the Health Belief Model (HBM), perceived severity and perceived susceptibility, are associated with abstinence intention among Nepalese male adolescent students for HIV/acquired immunodeficiency syndrome (AIDS) prevention. STUDY DESIGN AND METHODS: A school-based study was conducted at a single school located in central Kathmandu from July to August 2002. Participants included 183 male students in Grades 9-12 aged 14-19 years. Anonymous self-reported questionnaires were used, and Zagumny's AIDS Health Belief Scale was adopted as a measure of perceived severity and perceived susceptibility. RESULTS: Over half of the students (53%) strongly agreed with abstinence intention. Students with higher levels of perceived severity strongly agreed with abstinence intention [crude odds ratio 1.86, 95% confidence interval (CI) 1.02-3.38; adjusted odds ratio 1.94, 95% CI 1.05-3.58], but those with higher levels of perceived susceptibility did not. Moreover, age-stratified analysis showed that a high level of perceived susceptibility tended to decrease strong abstinence intention among students aged 16-19 years. CONCLUSIONS: Perceived severity enhanced abstinence intention. The interpretations of perceived susceptibility need further examination through a longitudinal study among students aged 16-19 years. Furthermore, future research is needed to assess the effect of HIV/AIDS education on HIV/AIDS prevention strategies using perceived severity as a motivational tool to help persuade Nepalese male students to abstain from sexual intercourse.
Acquired Immunodeficiency Syndrome↗