Low Pessimism Research Articles

Optimism, pessimism, and physical health among youth: a scoping review.

High levels of optimism (and low levels of pessimism) are associated with improved physical health in adults. However, relatively less is known about these relations in youth. The present study aimed to review the literature investigating optimism, pessimism, and physical health in children and adolescents from populations with and without health conditions. We conducted a scoping review up until February 2024. Studies were included if they sampled youth (average age ≤18 years) and treated optimism or pessimism as predictors of health behaviors or outcomes. Data on study and sample characteristics, health outcome, optimism construct, and findings were extracted from eligible papers and results were synthesized. Sixty studies were retained. Most studies were conducted in North America, with adolescents, and used cross-sectional designs and self-reported measures of health. Measures of optimism and pessimism differed across studies. Roughly one-third of studies sampled medical populations. Health categories included substance use, diet and physical activity, sexual health practices, medical adherence, other health behaviors, cardiometabolic health, subjective health/health-related quality of life, pain, sleep, and oral health. Generally, we observed adaptive associations between optimism and health. Higher optimism and lower pessimism were most consistently associated with lower rates of substance use and lower cardiometabolic risk. The presence of optimism or the absence of pessimism appears to be associated with various adaptive health outcomes among youth with and without health conditions. Developmental, methodological, and clinical considerations for future research are discussed, such as conducting longitudinal studies with objective measures of health and psychometrically validated instruments.

Stability and change of optimism and pessimism in late midlife and old age across three independent studies.

Research across a number of different areas in psychology has long shown that optimism and pessimism are predictive of a number of important future life outcomes. Despite a vast literature on the correlates and consequences, we know very little about how optimism and pessimism change across adulthood and old age and the sociodemographic factors that are associated with individual differences in such trajectories. In the present study, we conducted (parallel) analyses of standard items from the Life Orientation Test (Scheier & Carver, 1985) in three comprehensive data sets: Two-wave data from both the Berlin Aging Study II (N = 1,423, aged 60-88; M = 70.4, SD = 3.70) and the Midlife in the U.S. Study (N = 1,810 aged 60-84; M = 69.12, SD = 6.47) as well as cross-sectional data from the Survey of Health, Aging, and Retirement (N = 17,087, aged 60-99; M = 70.19, SD = 7.53). Using latent change-regression models and locally weighted smoothing curves revealed that optimism is on average very stable after age 60, with some evidence in Survey of Health, Aging, and Retirement of lowered optimism in very old age. Consistent across the three independent studies, pessimism evinced on average modest increases, ranging between .25 and .50 SD per 10 years of age. Of the sociodemographic factors examined, higher levels of education revealed the most consistent associations with lower pessimism, whereas gender evinced more study-specific findings. We take our results to demonstrate that age-related trajectories and correlates thereof differ for optimism and pessimism. Older adults appear to preserve into older ages those levels of optimistic expectations they have had at 60 years of age and show only modest increases in pessimism. We discuss possible reasons for these findings. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Future-oriented cognition: links to mental health problems and mental wellbeing in preschool-aged and primary-school-aged children.

Future-oriented cognition plays a manifold role for adults' mental health. The present study aimed to investigate the relationship between future-oriented cognition and mental health in N = 191 children aged between 3 and 7 years. Parents completed an online-questionnaire including children's future-oriented cognition (e.g., episodic foresight; Children Future Thinking Questionnaire; CFTQ), children's mental health problems (Strengths and Difficulties Questionnaire; SDQ), and wellbeing (Parent-rated Life Orientation Test of children; PLOT and Positive-Mental-Health Scale; PMH). More externalizing problems (especially hyperactivity) related to lower future-oriented cognition. For mental wellbeing, higher levels of optimism were associated with higher episodic foresight. Future-oriented cognition increased with age cross-sectionally. This increase was flatter at higher levels of wellbeing (indicated by lower pessimism). Results are discussed considering findings on the role of future-oriented cognition for mental health in adults and adolescents. Suggestions for future work are presented regarding the direction of the observed links and underlying mechanisms.

Socioeconomic, Behavioural, and Social Health Correlates of Optimism and Pessimism in Older Men and Women: A Cross-Sectional Study.

Optimism is a disposition characterised by positive future expectancies, while pessimism is characterised by expecting the worst. High optimism and low pessimism promote the health of older adults and may potentiate full engagement in life. We identified socioeconomic, behavioural, and social factors associated with optimism and pessimism in older adults. Participants included 10,146 community-dwelling, apparently healthy Australian adults aged 70 years and over from the ASPREE Longitudinal Study of Older Persons (ALSOP). Optimism and pessimism were measured using the revised Life Orientation Test. Cross-sectional ordinal logistic regression was used to determine the socioeconomic, behavioural, and social health factors associated with optimism and pessimism. Higher education, greater physical activity, lower loneliness, and volunteering were associated with higher optimism and lower pessimism. Low social support was associated with higher pessimism. Higher socioeconomic advantage, greater income, and living alone were associated with lower pessimism. Women were more optimistic and less pessimistic than men. The association of age, smoking status, and alcohol consumption with optimism and pessimism differed for men and women. Factors associated with higher optimism and lower pessimism were also those demonstrated to support healthy ageing. Health-promotion action at the individual level (e.g., smoking cessation or regular physical activity), health professional level (e.g., social prescribing or improving access and quality of care for all older adults), and community level (e.g., opportunities for volunteer work or low-cost social activities for older adults) may improve optimism and reduce pessimism, possibly also promoting healthy ageing.

The Interaction Between Optimism and Pessimism Predicted the Perceived Risk of Infection During the Covid-19 Pandemic: An Exploratory Cross-Sectional Study.

In this study, we examined the relationship between optimism and pessimism associated with the Covid-19 pandemic, mental health, and perceived risk of infection. In particular, we tested the hypothesis that, when optimism and pessimism were high during the pandemic period, a worse mental health and a higher perception of risk would be reported. To this end, a convenience sample of 374 Italian adults was enrolled. Measures included perceived stress, optimism, and pessimism associated with the development of the pandemic situation, as well as the perceived risk of Covid-19 infection. The results showed that optimism and pessimism were associated with perceived stress and Covid-19 risk perception while controlling for demographic variables. Optimism and stress were negatively related, while pessimism was positively related to both stress and risk perception. Furthermore, the interaction between optimism and optimism was significant, with a higher perception of risk in the presence of both high optimism and pessimism, and a lower perception of risk with high optimism and low pessimism. These results support the hypothesis that optimism and pessimism interacted in predicting Covid-19 risk perception and show that they should be measured as partially correlated but independent constructs in future investigations.

Efficient holistic timing analysis with low pessimism for rate-constrained traffic in TTEthernet

Safety-critical systems such as automotive and aerospace have high demands in real-time and reliability, and standard Ethernet cannot meet the requirements. TTEthernet provides deterministic, synchronous communication services and supports traffic classes with different priorities in the network, suitable for the safety-critical automotive and aerospace fields. However, the transmission of event-triggered rate-restricted (RC) traffic in TTEthernet is disturbed by multiple factors, such as preemption of TT traffic and interactions between RC traffic. Therefore RC traffic has an uncertain end-to-end delay. Existing delay analysis approaches do not provide a good balance of computational accuracy and time complexity. This paper proposes an extended holistic approach to obtain the worst-case end-to-end delay for RC traffic in TTEthernet. Our approach is based on the integration strategy of preemption in TTEThernet. We use the TT scheduled table as an input parameter and consider the frames’ offset to avoid traversing frames that do not generate interference. We compare our approach with existing approaches (Tam15, Ste11, and NC). The experimental results show that our approach obtains less pessimistic results than the approaches of Ste11 and NC while outperforming these three approaches in time complexity.

Dispositional optimism and pessimism in association with cognitive abilities in early and middle adulthood

The aim of the current study was to examine the associations of dispositional optimism and pessimism with cognitive abilities in adulthood. We performed two studies with data sets from the prospective Northern Finland Birth Cohort Studies: 26-year-olds (N = 383) and 46-year-olds (N = 5042). In both samples, dispositional optimism and pessimism were measured with Carver and Scheier's Life Orientation Test -Revised. In the data of 26-year-olds, the cognitive abilities assessed were reasoning, vocabulary, verbal fluency, fine-motor skills, selective attention, impulse control, and memory, while in 46-year-olds, memory was assessed. The analyses were carried out using multiple linear regression, and the associations were adjusted for gender, educational level, mother's educational level, and depression. Our results indicated that (I.) higher dispositional optimism and lower pessimism were associated with higher reasoning skills in young adults, and (II.) higher pessimism was related to lower scores on memory test in middle-aged adults. The findings provide a closer look on how dispositional optimism and pessimism are associated with the core cognitive abilities in adults.

Japanese adolescents’ attitudes towards learning English: A perspective from the self-worth theory

In this study, the authors investigated the attitudes of Japanese junior high school students towards studying English from the perspective of the Self-worth Theory. A total of 383 students aged 12 to 15 years participated in the qualitative study. Students were required to write three essays about how they would react under hypothetical circumstances in which their feelings of self-worth might be threatened. The contents of the students’ essays were analysed and matched with mechanisms within the quadrants of Covington’s Quadripolar Model of Achievement Motivation. Overall, the results suggested that the adolescents appeared to show traits of low defensive pessimism, high self-handicapping, and high helplessness, placing the students on the borderline of the Self-protectors and the Failure Acceptors. Reasons for the findings and pedagogical implications will be discussed.

Bounding the execution time of parallel applications on unrelated multiprocessors

Heterogeneous multiprocessors can offer high performance at low energy expenditures. However, to be able to use them in hard real-time systems, timing guarantees need to be provided, and the main challenge is to determine the worst-case schedule length (also known as makespan) of an application. Previous works that estimate the makespan focus mainly on the independent-task application model or the related multiprocessor model that limits the applicability of the makespan. On the other hand, the directed acyclic graph (DAG) application model and the unrelated multiprocessor model are general and can cover most of today’s platforms and applications. In this work, we propose a simple work-conserving scheduling method of the tasks in a DAG and two new approaches to finding the makespan. A set of representative OpenMP task-based parallel applications from the BOTS benchmark suite and synthetic DAGs are used to evaluate the proposed method. Based on the empirical results, the proposed approach calculates the makespan close to the exhaustive method and with low pessimism compared to a lower bound of the actual makespan calculation.

Examining Predictors of Fear of Cancer Recurrence Using Leventhal's Commonsense Model: Distinct Implications for Oncology Nurses.

Fear of cancer recurrence (FCR) is a common concern for survivors. Oncology nurses have a unique opportunity to identify survivors at increased risk of heightened FCR. Understanding predictors of FCR would be useful for this purpose; however, results about FCR predictors are inconsistent. To examine empirically inconsistent predictors of FCR as guided by Leventhal's Commonsense Model. A cross-sectional survey design was used to assess FCR, sociodemographic and clinical characteristics, and characteristics of the self (self-esteem and generalized expectancies) among cancer survivors. Structural equation modeling was used to examine predictors of FCR. Among 1001 participants, the mean time since diagnosis was 9.07 years, and most were diagnosed with breast cancer (65.93%). The strongest predictor of higher FCR was belief that knowing someone with a recurrence affects one's own level of FCR, although knowing someone with a recurrence actually predicted lower FCR. Other significant predictors of higher FCR were having 1 or more symptoms attributed to cancer, lower self-esteem, younger age, female gender, lower pessimism, longer time since diagnosis, and active follow-up at the survivorship clinic. Cancer survivors' perceptions are among an important series of variables that may predict higher levels of FCR. Oncology nurses are uniquely situated to identify the subset of cancer survivors with levels of FCR requiring professional intervention. Oncology nurses can use the predictors indicated in this study to identify survivors with greatest need for coping with FCR to facilitate expedient intervention and/or referral to psychosocial providers.

Are There Differences in Life-Satisfaction, Optimism, Pessimism and Perceived Stress between Therapeutic and Mastery Exercisers? A Preliminary Investigation

Background. Most incentives for exercise can be grouped into health-related ‘therapeutic’ and challenge or enjoyment-related ‘mastery’ categories. If these incentives are not independent of personal needs and expectations, their associated psychological profiles may vary.Methods. Based on the broaden-and-build theory, we examined the hypothesis that mastery exercise is associated with more favourable psychological profile, as reflected in greater life-satisfaction, optimism, pessimism, and perceived stress, than therapeutic exercise or no-exercise (the control group).Results. The results indicated that people who exercised for a mastery purpose (n = 57) reported greater optimism, lower pessimism and lower perceived stress than non-exercisers (n = 57) but they only scored higher in optimism in contrast to the therapeutic exercisers (n = 129) who did not differ from the controls in any of the measures. A composite score of a psychological profile, obtained by subtracting the sum of negative ratings from the sum of positive ratings, revealed that mastery exercisers exhibited higher scores than non-exercisers who did not differ from therapeutic exercisers.Conclusion. These preliminary findings suggest that two very general motives for exercise might be associated with different psychological profiles, which deserves future research attention in the better understanding of the psychological effects of exercise. Keywords: life-satisfaction, optimism, non-exerciser, perceived stress, pessimism.

Being an optimist or a pessimist and its relationship with morning cortisol release and past life review in healthy older people

Objective: Investigate the relationship between optimism and pessimism and the cortisol awakening response (CAR) and past life review in healthy older people.Design: 76 older volunteers summarised their lives, highlighting the most important events, impressions and experiences. Cortisol saliva samples were collected on two consecutive weekdays. High and low optimism and pessimism groups were computed by mean split.Main Outcome Measures: Percentages of positive (PE) and negative events (NE) and positive (PCE) and negative cognitions and emotions (NCE) were obtained. Optimism and pessimism were measured with the Life Orientation Test Revised. The areas under the curve with respect to the ground and with respect to the increase were computed, with the latter understood as the CAR.Results: The high pessimism group reported more NE and NCE and less PE and PCE (p’s < 0.041). No significant differences in CAR were found between high and low optimism and pessimism groups after removing suspected non-adherent participants (p’s > 0.116). Higher CAR was related to lower PCE, but higher NCE (both p < 0.008).Conclusion: Pessimism seems to increase the focus on negative aspects of the past, which may lead to a worse perception of life in ageing, whereas optimism contributes to a healthier CAR.

How are multifactorial beliefs about the role of genetics and behavior in cancer causation associated with cancer risk cognitions and emotions in the US population?

People who believe that cancer has both genetic and behavioral risk factors have more accurate mental models of cancer causation and may be more likely to engage in cancer screening behaviors than people who do not hold such multifactorial causal beliefs. This research explored possible health cognitions and emotions that might produce such differences. Using nationally representative cross-sectional data from the US Health Information National Trends Survey (N=2719), we examined whether endorsing a multifactorial model of cancer causation was associated with perceptions of risk and other cancer-related cognitions and affect. Data were analyzed using linear regression with jackknife variance estimation and procedures to account for the complex survey design and weightings. Bivariate and multivariable analyses indicated that people who endorsed multifactorial beliefs about cancer had higher absolute risk perceptions, lower pessimism about cancer prevention, and higher worry about harm from environmental toxins that could be ingested or that emanate from consumer products (Ps<.05). Bivariate analyses indicated that multifactorial beliefs were also associated with higher feelings of risk, but multivariable analyses suggested that this effect was accounted for by the negative affect associated with reporting a family history of cancer. Multifactorial beliefs were not associated with believing that everything causes cancer or that there are too many cancer recommendations to follow (Ps>.05). Holding multifactorial causal beliefs about cancer are associated with a constellation of risk perceptions, health cognitions, and affect that may motivate cancer prevention and detection behavior.

Associations of intelligence across the life course with optimism and pessimism in older age

Maintaining good cognitive function is important for successful aging, and it has been suggested recently that having and optimistic outlook may also be valuable. However few have studied the relationship between cognitive ability and dispositional optimism and pessimism in older age. It is unclear whether associations found previously between cognitive ability and pessimism in older age, are evident across the life course, and are consistent at different points in older age. In the present study we examined associations between dispositional optimism and pessimism measured in the eighth and ninth decade of life and childhood and older age cognitive ability, and lifetime change in cognitive ability. Participants were two independent narrow-age samples of older individuals with mean ages about 73 (n=847) and 87 (n=220) years from the Lothian Birth Cohorts of 1936 (LBC1936) and 1921 (LBC1921), respectively. Higher cognitive ability in childhood and older-age, and healthier cognitive change across the lifetime were associated with lower pessimism in older age: age-11 IQ (LBC1936: β=−0.17, p<0.001; LBC1921: β=−0.29, p=0.001), older-age IQ (LBC1936: β=−0.18, p<0.001; LBC1921: β=−0.27, p<0.001), cognitive change (LBC1936: β=−0.06, p<0.04; LBC1921: β=−0.15, p=0.05). Cognitive ability was not significantly associated with optimism in bivariate analyses, and after adjustment for covariates had only small associations with optimism and only in the LBC1936. The results are consistent with differential associations between cognitive functions and optimism and pessimism, and indicate that their associations with cognitive ability are similar in the eighth and ninth decades of life.

Relationship of optimism and suicidal ideation in three groups of patients at varying levels of suicide risk

Optimism has been associated with reduced suicidal ideation, but there have been few studies in patients at high suicide risk. We analyzed data from three study populations (total N = 319) with elevated risk of suicide: (1) patients with a recent acute cardiovascular event, (2) patients hospitalized for heart disease who had depression or an anxiety disorder, and (3) patients psychiatrically hospitalized for suicidal ideation or following a suicide attempt. For each study we analyzed the association between optimism (measured by the Life–Orientation Test-Revised) and suicidal ideation, and then completed an exploratory random effects meta-analysis of the findings to synthesize this data. The meta-analysis of the three studies showed that higher levels of self-reported optimism were associated with a lower likelihood of suicidal ideation (odds ratio [OR] = .89, 95% confidence interval [CI] = .85−.95, z = 3.94, p < .001), independent of age, gender, and depressive symptoms. This association held when using the subscales of the Life Orientation Test-Revised scale that measured higher optimism (OR = .84, 95% CI = .76−.92, z = 3.57, p < .001) and lower pessimism (OR = .83, 95% CI = .75−.92], z = 3.61, p < .001). These results also held when suicidal ideation was analyzed as an ordinal variable. Our findings suggest that optimism may be associated with a lower risk of suicidal ideation, above and beyond the effects of depressive symptoms, for a wide range of patients with clinical conditions that place them at elevated risk for suicide.

Profiles of Dispositional Expectancies and Affectivity Predict Later Psychosocial Functioning in Children and Adolescents With Cancer.

Examined how individual differences in disposition among pediatric cancer patients predict their later psychosocial functioning. Patients aged 8-17 years (N = 223) reported on their disposition at baseline. One and three years later, self-reports and parent reports of patient psychosocial functioning were obtained. Latent profile analysis was used to identify subgroups that differed on baseline disposition and to compare them on later outcomes. Three groups were identified: The "Positive" group (59%) had high optimism and positive affectivity and low pessimism and negative affectivity; the "Moderate" group (39%) had a similar profile, with less exaggerated scores; a small, "Negative" group (2%) had the opposite profile (low optimism/positive affectivity; high pessimism/negative affectivity). These groups differed in psychosocial functioning at follow-up, generally in expected directions. Most patients have a disposition that may be protective. A small minority at high risk for maladjustment is distinguished by their disposition.

Is dispositional optimism or dispositional pessimism predictive of ideal cardiovascular health? The Young Finns Study

Objective: We examined the independent association between dispositional optimism compared to dispositional pessimism and ideal cardiovascular health (defined by the American Heart Association).Design: A prospective design with a study sample of 1113 participants aged 24–39 years from the longitudinal Young Finns Study.Main outcome measures: Ideal cardiovascular health (comprised of seven ideal cardiovascular health metrics) was measured in 2001. The ideal cardiovascular health metrics were reassessed in 2007.Results: Low pessimism rather than high optimism was a better predictor of ideal cardiovascular health in 2007. When examining the association between optimism and pessimism and the seven ideal cardiovascular health metrics in 2007 (BMI, diet, physical activity, smoking status, blood pressure, total cholesterol and plasma glucose), low pessimism predicted non-smoking status, ideal physical activity and eating a healthy diet, while high optimism was associated with eating a healthy diet.Conclusion: Our findings suggest that low pessimism rather than high optimism is associated with ideal cardiovascular health, especially with health behaviours such as not smoking, being physically active and eating a healthy diet. Socio-economic status was the potential mediating or confounding factor. Future studies should examine the differential meaning of the optimism/pessimism concepts to further clarify their relation to health outcomes.

Family Structure and Psychological Health in Young Adults

This study explored the effect of the gendered structure of siblings in intact and non-intact families, on family relations, social support, perceived control, and psychological distress in a sample of 708 young adults (294 males and 414 females) aged between 18 - 21 years. Of the sample 96 were singletons, 208 had both a brother and sister, 206 had a brother and no sister, and 198 had a sister and no brother. While the results show that both the gender of the participants and the gender of the sibling seem to impact on distress and its mediators; the more important factor is the gender of siblings. In essence the presence of a female sibling is associated with more perceived support, control and optimism, and with lower pessimism and psychological distress. The presence of a female is also associated with better family relations overall and it is suggested that the main mechanism for this positive impact of female siblings is through the lowered conflict and increased expressiveness and cohesion experienced in female versus male dominated sibling groups.

Self-Ambivalence and Psychological Adjustment in Cultural Context

Bleuler and Freud claimed that conflicting feelings toward an attitude object, or ambivalence, may be associated with psychological maladjustment. While their viewpoint seems generally accepted in Western cultures, it is less clear whether it applies in other cultures. Two studies investigated whether self-ambivalence (SA; the co-presence of contrary evaluations of the self as an attitude object) is associated with several common manifestations of mental health in America (one study) and Japan (two studies). In Study 1, participants were 152 American and 162 Japanese college students. Results indicated that American participants were significantly higher in self-esteem (SE), and significantly lower in SA and depression than the Japanese participants, but did not differ in pessimism or anxiety, and that SA was associated with higher pessimism, anxiety, and depression in America, but associated with lower pessimism and uncorrelated with anxiety and depression in Japan. In Study 2, involving 165 Japanese participants, a negative relationship was found between SE and neuroticism, pessimism, anxiety, and depression, and a positive relationship between SE and life satisfaction, but no relationship was found between SA and neuroticism, pessimism, life satisfaction, anxiety, or depression. However, SE and SA were modestly correlated, suggesting that SA is not only not inimical to mental health (in Japan) but may actually be (at least modestly) beneficial. Culture-specific mental health implications of SA are discussed.

Optimism and pessimism as predictors of initiating and ending an antidepressant medication treatment

Background: The personality variables optimism and pessimism are potential risk factors for disorders commonly treated with antidepressants. Aims: To evaluate optimism and pessimism as predictors of initiating and ending an antidepressant treatment. Methods: Data consisted of 29,930 public sector employees with no record of diagnosed depression. Optimism and pessimism were measured using the Revised Life Orientation Test (LOT-R) at baseline. The data of purchases of antidepressants were from the national Drug Prescription Register. Results: During the mean follow-up of 4.4 years, 1681 participants initiated and of them 1288 ended an antidepressant treatment lasting at least 100 days. In the adjusted model, high optimism was associated with a lower likelihood of starting antidepressant medication treatment (hazard ratios, HR, 0.67, 95% CI 0.62−0.73) and a higher likelihood of stopping the treatment (HR = 1.18, 95% CI 1.08−1.30). High pessimism was associated with a higher likelihood of starting antidepressant medication treatment (HR = 1.27, 95% CI 1.16−1.38) and a lower likelihood of stopping it (HR = 0.89, 95% CI 0.80–0.98). These associations remained after optimism score was adjusted for pessimism and vice versa or those with symptoms of mental health problems at baseline were removed from the analyses. Conclusions: Low optimism and high pessimism are independently associated with an increased likelihood of initiating antidepressant medication treatment, but with a decreased likelihood of ending it during the follow-up.