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PubMed2000

Stressful events and information processing dispositions moderate the relationship between positive and negative affect: implications for pain patients.

Relationships between positive affect, negative affect, and pain were analyzed as a prospective function of stressful events in a sample of rheumatoid arthritis patients and as a cross-sectional function of an information processing disposition in persons with fibromyalgia. Positive affect and negative affect were statistically separate factors overall in both samples. In addition, negative affect and pain were related across all conditions. However, positive affect and negative affect were more negatively correlated during stressful periods and more negatively correlated for patients who processed information in a more simplistic fashion. Also, positive affect predicted pain during stressful times and did so for patients who processed information more simplistically as well. These data suggest positive affect and negative affect are unique factors whose interrelation and external correlates are not static.

Affect↗
PubMed2005

Opposite effect of negative and positive affect on stress procoagulant reactivity.

Exaggerated procoagulant responses to acute mental stress may contribute to coronary thrombosis, and continuing low-grade systemic coagulation activation may link negative affect with the development of coronary artery disease. We investigated whether negative and positive affect and perceived social support would moderate stress procoagulant reactivity. Psychological functioning, exhaustion, negative affectivity, depression, anxiety, worrying, vigor, and social support were assessed in 27 apparently healthy men (mean age 47 +/- 8 years) who underwent the 13-min Trier Social Stress Test combining preparation, speech, and mental arithmetic. Plasma levels of von Willebrand factor antigen (VWF:Ag), fibrinogen, factor VII clotting activity (FVII:C), FVIII:C, FXII:C, and D-dimer were measured immediately before and after stress. Acute stress elicited significant increases in hemodynamic, cortisol, and coagulant activity (p values < 0.05). VWF:Ag reactivity showed inverse relationships with exhaustion (r = -0.63, p < 0.001), negative affectivity (r = -0.53, p = 0.005), and worrying (r = -0.53, p = 0.005). Exhaustion and negative affectivity emerged as independent predictors of VWF:Ag reactivity explaining 54% of its variance. Fibrinogen reactivity showed inverse relationships with negative affectivity (r = -0.59, p = 0.002) and anxiety (r = -0.54, p = 0.005); negative affectivity emerged as an independent predictor of fibrinogen reactivity explaining 35% of its variance. Psychological functioning and FVII:C reactivity were also correlated (r = -0.52, p = 0.006). Whereas FVIII:C reactivity correlated positively with vigorous mood (r = 0.48, p = 0.012), positive associations between social support and procoagulant reactivity did not reach significance. Negative affect was associated with attenuated procoagulant reactivity to stress and the opposite was observed for positive affect. Negative affect is not likely to enhance the acute procoagulant stress response in healthy men.

Adult↗
PubMed1999

On the meaning and measurement of affective instability: clues from chaos theory.

BACKGROUND: "Affective instability" describes affective shifts occurring over hours to days that are associated with clinically significant impairment or distress. Since patients with this condition are clinically "chaotic," we undertook to study affective instability relative to normal affective variability using the tools of chaos theory. METHODS: Patients and controls generated time series data over 90 days using a visual analog mood scale to capture daily affective means and extremes. The series were analyzed using the Mean Squared Successive Difference (MSSD), Power Spectral Density (PSD), and Fractal Dimension (FD). RESULTS: Patients demonstrated substantially more variability than controls on the MSSD, but less complexity as measured by the FD. The PSD revealed that power varied with frequency (f) in a 1 [corrected] alpha relationship, wherein the alpha for patients was double that for controls. CONCLUSIONS: Despite the "chaotic" clinical presentation of affective instability patients, affective instability itself was found to be less complex from a chaos-theoretic perspective than normal affective variability. Of particular interest is the alpha ratio of order 2 between patients and controls seen in both our study and a similar but much longer study of mood in rapid-cycling bipolar disorder; an observation suggesting that pathological affect may be distinguishable from normal affective variability by a scale-invariant parameter.

Adolescent↗
PubMed2000

Measuring hedonic impact in animals and infants: microstructure of affective taste reactivity patterns.

The hedonic impact of taste is reflected in affective facial reactions made by human infants, other primates, and even rats. Originally studied in human infants, affective reactions to taste have also been used by affective neuroscience to identify hedonic brain systems in studies of animals (via application of neural stimulation, pharmacological activation, and neural lesion manipulations). The chief limitation of measuring affective reactions is that it is difficult for experimenters to know how to interpret them, and therefore how to interpret changes produced by brain manipulations. This paper notes guidelines to interpretation. It examines the phylogenetic continuity between humans, other primates, and rats in terms of the microstructure of taste-elicited affective reactions. It reviews evidence that affective taste reactivity patterns truly reflect a 'core hedonic process' of palatability or affect, rather than being an ingestion measure, consummatory behavior measure, or a sensory reflex measure. It reviews affective neuroscience studies of taste reactivity that have identified true hedonic brain substrates, and discriminated them from false hedonic brain substrates. It considers the neural bases of incentive 'wanting' versus 'liking'. Finally, it notes the difference between human subjective affective ratings of pleasure and 'core hedonic processes' reflected by behavioral affective reactions.

Affect↗
PubMed1999

Spatial and temporal summation of sensory and affective dimensions of deep somatic pain.

There is considerable evidence in support of differential information processing of the sensory-discriminative and motivational-affective meanings of pain. The purpose of this work was to examine whether temporal (acute, tonic, persistent) and spatial (local, regional, widespread) aspects of deep somatic pain influence the sensory and affective dimensions of pain. Acute pain consisted of a short bout of pain, lasting about 100 s. Tonic pain was the experience of experimentally maintained pain for 18 min. Both acute and tonic pain were induced by infusion of an algesic or control substance into muscle with the subject blinded with respect to the type of infusion and randomization of the application sequence. Comparing the response of experimental subjects to a group of matched cases with persistent masticatory myalgia alone or in combination with widespread musculoskeletal pain, we examine whether the experimental state is different from the matched clinical condition, and whether there is a difference between the condition being restricted to the face or not. The McGill pain questionnaire was used to assess the sensory and affective correlates of pain. The normalized sensory score for acute/unilateral face pain was different from that established for tonic/unilateral face pain (P = 0.055, borderline s.), and so was the normalized affective score (P = 0.009, s.). When comparing tonic/unilateral versus tonic/bilateral face pain, the affective scores increased with increased pain involvement (P = 0.009, s.) while the sensory sores were unaffected by the additional pain induced in the contralateral masseter muscle (P = 0.357, n.s). Notably, sensory and affective scores for tonic/bilateral and persistent/bilateral face pain were not statistically different (sensory: P = 0.169, n.s.; affective: P = 0.643, n.s). On the other hand, when contrasting persistent/bilateral face pain with persistent/ widespread musculoskeletal pain, both scores were significantly different (sensory: P < 0.001, s.; affective: P = 0.041, s.). Time in and spread of pain influenced the perceptual correlates of pain to a significant degree. The major increase in the sensory dimension occurred from 'no pain' to 'acute pain'. Affective scores showed the most significant increases from acute to tonic pain, particularly with greater spatial involvement. The significant increases in sensory scores observed when contrasting persistent facial pain alone and in combination with widespread musculoskeletal pain was attributed to the broader body experience. Because the perceptual correlates of tonic and matched persistent (chronic) pain states were similar, we concluded that it does not require months for the development of the sensory and affective meaning of persistent pain as assumed.

Acute Disease↗
PubMed2000

Regulation of negative affect during mother-child problem-solving interactions: adolescent depressive status and family processes.

Despite recent suggestions that depression can be conceptualized as a disorder of affect regulation, relatively little research has focused on affect regulation skills in depressed individuals. This paper investigated whether depressed adolescents (N = 25) differ from nondepressed adolescents (N = 25) on two indices of affect regulation (i.e., duration of negative affective states and reciprocity of maternal negative affect) as well as whether these indices are related to microsocial family interactional processes. Analyses revealed that depressed teens differed from their nondepressed peers with regard to duration of negative affective states but not in their likelihood of reciprocating negative affect. Additionally, indices of adolescent affect regulation were related to family interactional processes. Duration of depressive affect was positively associated with maternal display of facilitative behavior contingent on adolescent depressive behavior. Duration of aggressive behavior was inversely related to maternal problem-solving responses to aggressive behavior. Finally, adolescent reciprocity of maternal depressive and aggressive behaviors was strongly associated with mothers' reciprocity of adolescents' negative affective behavior.

Adolescent↗
PubMed1987

Cognitive operations associated with individual differences in affect intensity.

There are wide individual differences in the characteristic intensity of affective response to the same emotion-evoking event. The processes whereby individuals come to experience strong or mild emotional responses when exposed to the same affect-provoking stimuli are still unclear. In these studies, we propose that individual differences in affect intensity are associated with certain cognitive operations used during exposure to emotion-relevant stimuli. Specifically, cognitive operations that involve personalizing, generalizing, and selective abstraction were hypothesized to discriminate subjects high and low in affect intensity. Two studies replicated support for the hypothesis that subjects high on the affect-intensity dimension engage in more personalizing/empathic and more generalizing/elaborative cognitive operations than do subjects low on the affect-intensity dimension. The same cognitive operations discriminated groups high and low in affect intensity in response to both positive and negative emotional stimuli. Also, the cognitions that discriminated subjects high and low in affect intensity occurred only in response to affective stimuli; neutral stimuli did not evoke divergent cognitive operations for these two groups. Finally, a high degree of consistency was found in the use of emotion-relevant cognitive operations across positive and negative affective stimuli.

Adaptation, Psychological↗
PubMed2006

Cultural variation in affect valuation.

The authors propose that how people want to feel ("ideal affect") differs from how they actually feel ("actual affect") and that cultural factors influence ideal more than actual affect. In 2 studies, controlling for actual affect, the authors found that European American (EA) and Asian American (AA) individuals value high-arousal positive affect (e.g., excitement) more than do Hong Kong Chinese (CH). On the other hand, CH and AA individuals value low-arousal positive affect (e.g., calm) more than do EA individuals. For all groups, the discrepancy between ideal and actual affect correlates with depression. These findings illustrate the distinctiveness of ideal and actual affect, show that culture influences ideal affect more than actual affect, and indicate that both play a role in mental health.

Acculturation↗
PubMed2006

Flat affect in schizophrenia: relation to emotion processing and neurocognitive measures.

Impaired emotional functioning in schizophrenia is a prominent clinical feature that manifests primarily as flat affect. Studies have examined the perception, experience, and expression of emotions in schizophrenia and reported normal ratings of experience but impaired affect identification. However, the relation between flat affect and performance on facial affect identification and cognitive tasks has not been systematically examined in relation to premorbid adjustment and clinical outcome. We report a prospective study of 63 patients with at least moderate severity of flat affect and 99 patients without flat affect, who were compared on functional domains, emotion processing tasks, and neurocognitive measures. Flat affect was more common in men and was associated with poorer premorbid adjustment, worse current quality of life, and worse outcome at 1-year follow-up. Patients overall performed more poorly on emotion processing tasks, one that required identification of happy and sad emotions and one that required differentiating among intensities within these emotions. They responded inaccurately yet faster than controls for the intensity differentiation task, suggesting a decomposition of the normal relation between accuracy and speed. Flat affect ratings, compared with other negative symptoms, uniquely predicted performance on emotion processing tasks. Patients with flat affect showed greater impairment in both emotion processing tasks, with the most pronounced impairment for the intensity differentiation task. However, the 2 patient groups did not differ in the neurocognitive profile except for verbal memory. We conclude that flat affect is an important clinical feature of schizophrenia that exacerbates the course of illness.

Adolescent↗
PubMed2006

Elderly patients with hip fracture with positive affect have better functional recovery over 2 years.

OBJECTIVES: To evaluate whether patients with hip fracture with high positive affect had better functioning than those with low positive affect or depressive symptoms in three performance-based measures over 2 years after the fracture. DESIGN: Longitudinal study with assessments at baseline and 2, 6, 12, 18, and 24 months posthospitalization. SETTING: Community. PARTICIPANTS: Four hundred thirty-two patients, aged 65 and older, hospitalized for hip fracture in Baltimore, Maryland, between 1990 and 1991. MEASUREMENTS: High and low positive affect and depressive symptoms were based on baseline Center for Epidemiologic Studies Depression Scale score, usual and rapid walking speed, one chair stand, demographic factors, comorbidities, and history of cognitive impairment. RESULTS: At each follow-up point, respondents with high positive affect at baseline (36% of sample) had faster walking and chair stand speeds than those with low positive affect (13%) and depressive symptoms (51%). For example, at 6 months, the mean usual walking pace was 0.4 m/s (standard error (SE)=0.02) for respondents with high positive affect, versus 0.4 m/s (SE=0.03) and 0.35 m/s (SE=0.02) for patients with low positive affect and depressive symptoms, respectively; adjusted differences were 0.02 (95% confidence interval (CI)=-0.06-0.09) and 0.06 (95% CI=0.01-0.11). Respondents with high positive affect appeared to achieve their maximum improvement in usual pace approximately 6 months before other respondents, but this interaction was not statistically significant. Respondents with consistently high positive affect had the best functioning over the follow-up period. CONCLUSION: High positive affect seems to have a beneficial influence on performance-based functioning after hip fracture.

Affect↗
PubMed1997

A self report measure of affective lability.

OBJECTIVES: The development and validation of the Center for Neurologic Study-Lability Scale (CNS-LS), the first self report measure of affective lability in patients with amyotrophic lateral sclerosis (ALS). METHODS: Potential questionnaire items were identified through interviews with patients and families and expert review. Potential items, as well as measures of affect intensity, affective lability in psychopathology, and depression were administered to 99 patients with ALS for item selection and the examination of factor structure and construct validity. Test-retest reliability was examined using an additional sample of 31 patients with ALS, and criterion related validity was examined by comparing CNS-LS scores with physicians' diagnoses of affective lability in a sample of 77 patients with ALS. RESULTS: A seven item questionnaire emerged, composed of two subscales measuring labile laughter (four items) and labile tearfulness (three items). The CNS-LS showed a pattern of associations with affect intensity, affective lability in psychopathology, and depression consistent with a scale measuring affective lability. The CNS-LS also showed good test-retest reliability and internal consistency, and successfully predicted physicians' diagnoses of affective lability. An auxiliary subscale measuring labile frustration, anger, and impatience also emerged. CONCLUSIONS: The CNS-LS is a short, easily administered, and psychometrically sound measure of affective lability for use with patients with ALS. It has potential applications as both a clinical screening device and a research tool. The need for future research into the relation of depression as well as labile frustration, anger, and impatience to the syndrome of affective lability in neurological disorders is discussed.

Affect↗
PubMedDate not supplied

The influence of affect on social-information processing.

This study examined the impact of four affect induction conditions (self-induced positive affect, music-induced positive affect, music-induced negative affect, and neutral affect) on the social-information-processing skills of 96 seventh-grade students with and without learning disabilities using the Dodge (1983) model of social skills. Following a 1-minute affect induction, students were presented with a social problem and asked a series of questions that tested their social skills. Although the results did not find significant differences between school-identified students with and without learning disabilities, there were significant main effects for language skills and affect induction. Students above the median on the Iowa Test of Basic Skills language test generated more solutions and fewer negative responses than students below the median. Students in the self-induced positive affect condition generated more solutions, whereas students in the music-induced positive affect condition generated more embellishments and perceived less interpretation (negative/positive), than students in the neutral and negative affect conditions. The implications of these results for research and practice are discussed.

Adolescent↗
PubMed2006

The role of affect in UK commuters' travel mode choices: an interpretative phenomenological analysis.

Previous research has suggested that the choice between public transport and private car use is not solely based on utility considerations, such as time and cost. However, affective considerations tend not to be targeted in policy interventions to reduce car use. This may be due, in part, to a lack of clarity about which affective responses to car use are important and how they may affect willingness to switch to public transport. This study sought to clarify the role of affective responses in transport mode choice. An interpretative phenomenological analysis (IPA) of car users' accounts was conducted to (i) explore affect associated with decisions to drive or use public transport to get to work; and (ii) describe the role of affect on such transport decisions, and its relationship to utility considerations. Semi-structured interviews were conducted with 18 car users employed at a medium-sized UK university. Four affect themes were identified: These were journey-based affect (JBA), personal space, autonomy and identity. Typical 'utility' factors such as time, cost and reliability had important affective effects, and these were considered alongside utility components (e.g. getting to work on time). However, these effects were not always additive, and the role of affect depended on participants' own assessment of their circumstances. Implications for interventions are discussed.

Adult↗
PubMed2000

Affect dysregulation as a way of life.

Storms of affect, states of panic, and other apparently dysregulated affect states may not be as dysregulated as they seem. While initial states of panic during a rape, etc. may have the quality of chaos and be associated with dissociative experience, rekindled affect may actually burst forth in an unconsciously scripted manner, telling a story for which words have not yet been found. The story of abusive experience may only appear to be dysregulated. The patient with an apparent dysregulation of affect may be suffering from complex affect scripts to which she is subject via unconscious attempts to tell a story based on experience that has been nonverbally encoded. The interaction of neurobiological systems of affect and memory to produce decontextualized experience, which leaves a person bereft of understanding but reeling from storms of affect, is described. While more work remains to be done to delineate the kind of model described here, the efficacy of such an approach and the blamelessness of the neurobiological givens may be a useful construct. Rather than thinking of people who demonstrate affective dysregulation as being subject to psychic disorganization, attention to the sequences and repetition of affect states may lead to analysis of previously unknowable model scenes and their resolution. This framework brings some hope to an area of inquiry that is strewn with despair for both patient and clinician. The treatment of dissociative disorders teaches us much about how we all are much more alike than we are different. If only we are willing to immerse ourselves in the milieu of the affective chaos our patients bring to treatment, then we can begin to study the repetitive scripts of experience that act like the strange attractors of chaos theory.

Affective Symptoms↗
PubMed2005

An experience sampling study of associations between affect and alcohol use and problems among college students.

OBJECTIVE: This study used experienced sampling methodology to examine the relationship between affective functioning and alcohol consumption and problems. METHOD: Fifty-six college students provided baseline data on measures of impulsivity and distress tolerance and provided experience sampling data for 2 weeks on measures of negative affect, positive affect, and alcohol consumption and problems. Women made up 54% of the sample. The sample ranged in age from 21 to 23 (mean [SD] = 21.50 [0.57]); 98% were white and 2% were Asian. RESULTS: As predicted, higher levels of both positive and negative affect during the day were associated with higher rates of consumption that night. In contrast, negative, but not positive, affect was associated with alcohol-related problems after controlling for alcohol consumption. Impulsivity was associated with higher consumption and problems and moderated the relationships between negative affect and problems and also between alcohol consumption and problems. Low distress tolerance was associated with a decreased association between positive affectivity and alcohol consumption. CONCLUSIONS: This study replicated and extended previous research on affective models of alcohol use and problems through the use of experience sampling methodology. The results demonstrated associations between affective variables and alcohol consumption and problems measured through near real-time assessment. The results suggest a functional association between alcohol consumption and problems and both within-person changes in affect and between-person differences in impulsivity and distress tolerance.

Adult↗
PubMedDate not supplied

Fabry disease: renal sonographic and magnetic resonance imaging findings in affected males and carrier females with the classic and cardiac variant phenotypes.

OBJECTIVE: To describe the renal ultrasonography (US) and magnetic resonance imaging (MRI) findings in affected males and female carriers with the classic and cardiac variant phenotypes of Fabry disease (alpha-galactosidase A [alpha-Gal A] deficiency). METHODS: The renal US and MRI features of 76 classically affected males (aged 7-53 years), 40 female carriers from classically affected families (aged 18-66 years), and 6 males with the cardiac variant phenotype (aged 17-59 years) were reviewed by 3 blinded board-certified radiologists. The images were evaluated for the presence of cortical cysts, parapelvic cysts, renal atrophy, decreased cortical thickness, increased echogenicity (US only), and decreased corticomedullary differentiation (MRI only). The consensus findings were analyzed with respect to the patients' sex, age, Fabry genotype and phenotype, and renal function. RESULTS: MRI was more sensitive than US in detecting radiographic abnormalities. In the 76 classically affected males, the most common US abnormalities were cysts (36.9%; cortical cysts = 22.4%, parapelvic cysts = 14.5%), increased echogenicity (17.1%), and decreased cortical thickness (11.9%), whereas the most common MRI abnormalities were cysts (47.3%; cortical cysts = 28.9%, parapelvic cysts = 18.4%), loss of corticomedullary differentiation (43.4%), and decreased cortical thickness (7.9%). Among the 40 female carriers, common US abnormalities included cysts (20%; cortical cysts = 10%, parapelvic cysts = 10%) and increased echogenicity (7.5%), whereas MRI findings included decreased corticomedullary differentiation (40%) and cysts (37.5%; cortical cysts = 20%; parapelvic cysts = 17.5%). Renal US and MRI were normal in 5 classically affected males aged 12 years or younger and 2 female carriers aged 20 years or younger. Among the 6 male cardiac variants, abnormal US findings included cysts (66.3%; cortical cysts = 50%, parapelvic cysts = 16.3%) and increased echogenicity (33.3%), whereas MRI detected decreased corticomedullary differentiation in all (100%) and cysts in 83% (cortical cysts = 66.7%; parapelvic cysts = 16.3%). Serum creatinine levels were elevated (>1.2 mg/dL) in 40.8% and 15% of the classically affected males and female carriers with US and/or MRI abnormalities compared with 14.8% and 0%, respectively, who had elevated serum creatinine levels but no detectable radiographic abnormalities. There was no association of alpha-Gal A genotype with type or frequency of abnormalities in classically affected patients. CONCLUSIONS: Among classically affected males and female carriers, renal US and/or MRI abnormalities were detected in 64.5% and 60%, respectively. The occurrence and number of abnormalities increased with age in affected males and female carriers. Cysts, particularly parapelvic cysts, were more common and appeared earlier than in the general population. No renal abnormalities were detected in classically affected males or female carriers <12 years or <20 years of age, respectively. Five of the 6 males with the later-onset milder cardiac variant phenotype had loss of corticomedullary differentiation on MRI. Renal imaging abnormalities were more frequent in older patients with elevated serum creatinine levels, regardless of alpha-Gal A genotype or Fabry phenotype.

Adolescent↗
PubMed2003

Outpatients with low back pain: an analysis of the rate per day of pain improvement that may be expected and factors affecting improvement.

OBJECTIVE: To determine, only for those who improved, the rate per day of improvement expected for outpatients with low back pain and to identify factors influencing pain improvement: pain duration before assessment, pain and physical functioning levels before assessment, age, sex, and affective factors. It was presupposed that affective factors would have an appreciable effect. DESIGN: The LIFEware System database was used. Analysis was performed on 1292 records for the Painfree measure and 1562 records for the LIFEware System Visual Analog Scale. Measures for pain, physical functioning, and affective well-being were analyzed for 0-30 days vs. >30 days of pain duration before assessment using classification and regression trees analysis. RESULTS: In both Painfree and LIFEware System Visual Analog Scale, 73% improved and 27% did not improve. Of those who improved, outpatients with 0-30 days of pain duration before assessment had higher per day rates of improvement than the >30 days group. Factors affecting improvement were, in descending order, more initial pain, younger age, and positive affective well-being; physical functioning did not affect rate of improvement. Factors affecting improvement for outpatients with >30 days since onset were, in descending order, more initial pain and better initial physical functioning; age and affective well-being were not factors. For all, neither sex nor the "satisfaction with life in general" question affected low back pain rate of improvement. CONCLUSION: Findings may be useful for clinical application because the actual rate of improvement may be compared with the expected rate. There was only a weak relationship shown between affective factors and pain improvement.

Adolescent↗
PubMed2002

Characterizing affective instability in borderline personality disorder.

OBJECTIVE: This study sought to understand affective instability among patients with borderline personality disorder by examining the degree of instability in six affective domains. The authors also examined the subjective intensity with which moods are experienced and the association between instability and intensity of affect. METHOD: In a group of 152 patients with personality disorders, subjective affective intensity and six dimensions of affective instability were measured. The mean scores for lability and intensity for each affective domain for patients with borderline personality disorder were compared with those of patients with other personality disorders through analyses that controlled for other axis I affective disorders, age, and sex. RESULTS: Greater lability in terms of anger and anxiety and oscillation between depression and anxiety, but not in terms of oscillation between depression and elation, was associated with borderline personality disorder. Contrary to expectation, the experience of an increase in subjective affective intensity was not more prominent in patients with borderline personality disorder than in those with other personality disorders. CONCLUSIONS: By applying a finer-grained perspective on affective instability than those of previous personality disorder studies, this study points to patterns of affective experience characteristic of patients with borderline personality disorder.

Adult↗