Depression and the perception of reinforcement.

Tested the prediction of the learned helplessness model of depression that depressed Ss tend to perceive reinforcement as more response-independent than do nondepressed Ss in skill tasks, but not in chance tasks. Changes in expectancies for success following reinforcement in chance and skill tasks were examined in 32 college students. The Rotter Internal-External Control Scale and Beck Depression Inventory were used to classify Ss into 4 groups: depressed high external, depressed low external, nondepressed high external, and nondepressed low external. The predictions were confirmed: nondepressed Ss showed greater expectancy changes than depressed Ss in skill, while the changes of depressed and nondepressed Ss were similar in chance. Externality had no significant effect on expectancy changes in chance or skill. Results indicate that depression entails a specific cognitive distortion of the consequences of skilled action. (27 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Expectancy changes in depression and schizophrenia.

Does the learned helplessness model of depression apply to clinically depressed patients and is it specific to depression? Changes in expectancy following success and failure in skill and chance tasks were assessed for depressed nonschizophrenics (unipolar depressives), depressed schizophrenics, nondepressed schizophrenics, and normal controls (32 Ss, aged 18–50 yrs). Unipolar depressives showed smaller changes in expectancy of future success after failure in the skill task than did the controls and both schizophrenic groups. Depressed schizophrenics did not show smaller expectancy changes than nondepressed schizophrenics. The learned helplessness model has been tested primarily in populations with subclinical depression; the present results provide partial support for learned helplessness as a model of one type of severe clinical depression and suggest that learned helplessness is not a general feature of psychopathology. (27 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Depression and perceived reinforcement: A reconsideration.

Evidence for the depressed S's hypersensitivity to any feedback about his performance and for the reversibility of depression-based perceptual deficits suggests that the depressed S can perceive response–reinforcement contingencies correctly, but only if given unassailable evidence of the efficacy of his actions. A high rate of response-contingent reinforcement is one instance of such evidence. The authors predicted that depressed Ss would misperceive skill task rewards under low- but not under high-reinforcement conditions. Changes in verbalized expectancies of success on skill and chance tasks at either 50 or 75% reinforcement rate were compared for 20 depressed and 20 nondepressed college students. Contrary to prediction, depressed Ss in no way differed from the nondepressed on the skill task at 50% reinforcement, and they produced larger expectancy changes on the chance task than did nondepressed Ss at 75% reinforcement. Results argue against the view that the depressed person misperceives response reinforcement contingencies, and they suggest instead that the depressed person overgeneralizes from any experience of success or failure in forming expectations for future successes. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Activity valence as a function of mood change.

Investigated variation of activity evaluations as a function of affective change. 32 depressed and 36 nondepressed college students were exposed to 1 of 3 mood induction conditions, including depressive, elated, or neutral statements. Additionally, each S rated several activities for degree of pleasantness before and after mood manipulations. Affect-induction procedures were successful in changing or intensifying characteristic mood. For both groups, the induction of negative affect significantly decreased the enjoyableness attributed to activities, the induction of positive affect significantly elevated activity evaluations, and a neutral induction did not significantly change activity ratings. Contrary to predictions, depressed and nondepressed Ss did not differ in their initial evaluations of activities, indicating that they may approach activities with similar expectations of reinforcement. Implication for P. M. Lewinsohn's (1974, 1975) model of depression are discussed. (34 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Depressed mood in multiple sclerosis: Relationship to capacity-demanding memory and attentional functioning.

Because it is theorized that depression results in reduced available attentional capacity that, in turn, can explain the impaired performance on capacity-demanding tasks in depressed individuals, the authors predicted that multiple sclerosis (MS) patients with depressed mood would have difficulty with these types of tasks. Twenty depressed mood MS participants were compared with 41 nondepressed mood MS participants and 8 nondepressed mood controls on 5 attentional capacity-demanding clinical memory and attentional tasks and 3 tasks with minimal capacity demands. Depressed mood MS patients performed significantly worse than both nondepressed mood groups on the 3 speeded capacity-demanding attentional measures but not on any of the tasks requiring few capacity demands, supporting the authors' predictions. The possibility that the impaired performance of depressed mood MS patients on speeded attentional tasks was mediated by reduced verbal working memory capacity, impaired deployment of executive strategies that access working memory capacity, or psychomotor slowing is explored. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Universal versus personal helplessness in depression: Belief in uncontrollability or incompetence?

The learned helplessness model of depression predicts that depressed individuals believe outcomes are more response independent than do nondepressed individuals in a skill situation. The present study assessed whether depressives' cognitive distortions are specific to their belief about their own skilled action or are a result of a general belief in uncontrollability in the world. Changes in expectancies following success and failure in skill and chance tasks were examined in 32 depressed and 32 nondepressed college students who either performed themselves or observed a confederate perform a pair of tasks. In the skill task, depressed Ss showed significantly smaller changes in expectancy than nondepressed Ss when estimating the probability of their own success. In contrast, depressed and nondepressed Ss did not differ when estimating the probability of another person's success on the identical skill task. It is inferred that depressed individuals view themselves as helpless in a skilled situation but do not view the situation itself as uncontrollable. Results are discussed in terms of the reformulated learned helplessness model. (52 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Motivational and associative aspects of mild depression in skill and chance tasks.

In Exp I, the levels of aspiration and expectancies for success of 281 mildly depressed and nondepressed college students on a skill and chance task were studied. The 2 groups did not differ in expectations for success, but depressed Ss displayed elevated levels of aspiration, particularly for the skill task. Exp II, with 120 college students, tested the prediction, based on an attainment discrepancy model, that increases in expectancy for success would be a function of the interaction of performance level and the skill–chance nature of a task for mildly depressed Ss but not for nondepressed Ss. Comparisons of increases in expectancy for success following average and superior performance support this prediction. The prediction that locus of control (Rotter's Internal–External Locus of Control Scale) and depression (Beck Depression Inventory) would not be significantly correlated was also confirmed. Results indicate that the level of aspiration of mildly depressed persons may be particularly elevated in skill tasks, resulting in the perception of average performance in such tasks as unsuccessful. (48 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Depressed and nondepressed inpatients' cognitions of hypothetical events, experimental tasks, and stressful life events.

40 depressed (mean age 40 yrs) and 30 nondepressed (mean age 38 yrs 3 mo) inpatients' attributions and other cognitions were assessed for 3 types of situations: stressful life events (the Beck Depression Inventory), hypothetical events (Attributional Styles Questionnaire), and experimental (noise-escape) tasks. Depressed Ss manifested a greater depressive attributional style in response to stressful life events but did not differ from nondepressed Ss in their attributions of hypothetical events or experimental tasks. Correlations assessing cross-situational consistency of attributions were largely nonsignificant. Corrections for attenuation and analyses of trained evaluators' ratings of Ss' attributions did not substantially alter the pattern of results. (11 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Depression and perception of reinforcement: Lack of differences in expectancy change among alcoholics.

62 male alcoholic inpatients (mean age 43.55 yrs) were administered the Beck Depression Inventory and the chance and skill tasks previously employed to investigate the perception of reinforcement within the learned helplessness model of depression. Three groups differing in level of depression were composed. The dependent measures were expectancy statements for future success within both the skill and chance tasks. The data were analyzed using a 3 by 2 ANOVA with repeated measures across tasks. No significant Depression Task interactions were obtained. The major proportion of behavioral variance in the analyses appeared to be accounted for by the salience of task characteristics. The implication for the learned helplessness model and the interaction of alcoholism and depression are discussed. (18 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Neuropsychological performance and positive and negative symptoms in schizophrenia.

Examined cognitive functions in 11 positive-symptom (mean age 36 yrs), 10 negative-symptom (mean age 33.8 yrs), and 23 mixed-symptom (mean age 31.4 yrs) schizophrenics; 15 bipolar patients (mean age 34.7 yrs); and 12 normal controls (mean age 34.8 yrs) to explore the relation between symptoms and performance. Ss were administered a neuropsychological test battery including the Purdue Pegboard, the Revised Visual Retention Test, and the Block Design subtest of the Wechsler Adult Intelligence Scale—Revised (WAIS—R). Group comparisons revealed generalized deficits in schizophrenics. Positive-symptom schizophrenics scored below normal Ss and negative-symptom Ss on 2 measures tapping verbal memory. Multiple regression analyses revealed that negative symptom ratings were inversely associated with performance on visual-motor tasks, whereas positive symptoms were inversely associated with verbal memory performance. Findings are not consistent with the notion that cognitive deficits are uniquely associated with negative symptoms. Instead, results suggest that there may be specific cognitive correlates of both the positive and negative symptom dimensions. (38 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The functional relation between depression and problematic interpersonal behavior.

75 depressed patients (mean age 33.9 yrs) were compared with 69 nondepressed high MMPI controls (mean age 25.7 yrs) and 80 normal controls (mean age 29.9 yrs) on self-reported frequency and comfort of various interpersonal events, verbal and nonverbal behavior in group and dyadic interactions, and interpersonal style. Identified as uniquely associated with depression were (a) infrequent engagement, discomfort, and low levels of obtained reinforcement in social activity and in giving and receiving positive responses; (b) discomfort in being assertive and low levels of reinforcement obtained from such behavior; (c) discomfort experienced in conjunction with negative cognitions concerning personal interactions; and (d) self-, peer-, and observer-rated deficiencies in interpersonal style group interactions. On verbal and nonverbal behavior measures, no deficits uniquely associated with depression were identified. (17 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Defective interhemispheric transfer in schizophrenia.

Groups of schizophrenics, nurses, and psychiatric controls were trained to perform a manual shape discrimination task. The 20 schizophrenics included 17 outpatients and 3 short-term inpatients: 10 males (mean age 36 yrs) and 10 females (mean age 37.6 yrs). Nurse control Ss were 10 male (mean age 26.3 yrs) and 10 female (mean age 22 yrs) psychiatric nurses or student nurses. Psychiatric control Ss were 8 males (mean age 36.1 yrs) and 10 females (mean age 32.6 yrs). On both of the tasks included in the experiment, the schizophrenic group, but not the control groups, displayed defective intermanual transfer. The performances of the schizophrenics resembled those previously obtained with split-brain monkeys on similar tasks; therefore, it is concluded that the schizophrenics tested suffered from incomplete transfer of stereognostic shape information from 1 cerebral hemisphere to the other. Experiments suggesting poor interhemispheric transfer on auditory tasks in schizophrenics are discussed along with the possibility that certain schizophrenic symptoms are related to defective interhemispheric communication. (21 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Self-reinforcement and depression in interpersonal interaction: The role of performance level.

19 depressed and 12 nondepressed psychiatric inpatients and 16 nondepressed nonmedical hospital employees (18–60 yrs old) participated in dyadic interactions with age-matched, opposite-sex strangers; each S interacted with a different partner. Ss were rated on a number of measures of social skill, such as the Revealed Differences Questionnaire and the Behavioral Assessment of Speech Anxiety Scale. Following the session, Ss viewed a videotape of their interaction and were given the opportunity, at 30-sec intervals, to reward or punish their performance. Results partially support theories postulating a low, performance-independent level of self-reinforcement specific to depression. Although depressed Ss administered a lower number of self-reinforcements and obtained lower ratings on measures of social skill than did hospital employees, their performance on these variables was not significantly different from that of nondepressed patients. Using social skills scores as covariates did not erase the main effect for Diagnostic Group in an analysis of the number of self-reinforcements administered. The low rate of self-reinforcement administered by the 2 patient groups can not be fully explained in terms of their lower level of social skill. (37 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Serial recall by schizophrenic and affective patients during and after psychotic episodes.

Eight schizophrenics (mean age 27.3 yrs), 8 depressed patients (mean age 33.1 yrs), and 8 normal controls (mean age 27 yrs) completed the MMPI and were asked to recall short word strings in both the presence and absence of distraction. Results show a differential cognitive deficit among schizophrenics both before and after a general improvement in their level of adjustment. That is, despite an overall improvement in their accuracy of recall prior to discharge, their performance continued to be impaired relative to depressed and normal Ss on the words presented in the 1st serial position. A tendency toward greater distractibility among schizophrenics failed to reach statistical significance at both points of assessment. Further substantiation of such stable forms of cognitive impairment may facilitate the identification of individuals who are vulnerable to the development of schizophrenia and may shed light on the adjustment problems that many chronic patients continue to experience after discharge from the hospital. (18 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Depression, working models of others, and relationship functioning.

Two studies examined depressives' working models of others and the relative contribution of these models and depression to relationship functioning. Respondents reported on their childhood relationships, adult attachment style, and relationship functioning. Study 1 compared 163 mildly depressed and nondepressed college women (aged 17–48 yrs), and Study 2 compared 25 married women recovering from clinical depression with 23 nondepressed married women (mean age 40 yrs for both groups). Mildly depressed college women evidenced greater preoccupation and fearful avoidance in romantic relationships than did nondepressed women; recovering depressed women evidenced greater fearful avoidance. In both studies, relationship functioning was predicted more strongly by adult attachment style than by depression status. Among college women, positive experiences with mother also were linked to better relationship functioning; however, attachment style and depression status mediated this effect. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Personal efficacy, external locus of control, and perceived contingency of parental reinforcement among depressed, paranoid, and normal subjects.

Hypothesized that different combinations of personal efficacy and outcome expectancies (i.e., locus of control) would characterize the thought structures of normal Ss and of psychiatric patients suffering from distinctly different disorders. 26 normal (mean age 30.1 yrs), 15 depressed, and 22 paranoid Ss (mean age of patients 34.5 yrs) completed scales that measured beliefs in personal efficacy, beliefs that outcomes are controlled either by chance or by powerful others, and perceived contingency of parental reinforcement. Findings show that normals judged themselves to be more efficacious than did psychiatric Ss, depressives expected outcomes to be controlled by chance, and paranoids expected outcomes to be under the control of powerful others. Among the normals, outcome expectancies were strongly associated with personal efficacy, but among the patients, these beliefs were unrelated. Depressives and paranoids equally reported more noncontingent parental reinforcement than did normals. Perceived contingency of parental reinforcement was predictive of outcome expectancies but not of personal efficacy. Data suggest that low personal efficacy may be a distinguishing characteristic of all psychiatric patients, whereas outcome expectancies may determine the specific nature of the psychiatric disorder. (28 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Left hemisphere dysfunction and left hemisphere overactivation in schizophrenia.

Reports 2 experiments relating schizophrenia to functional brain asymmetry. In Exp I, 24 schizophrenics (mean age, 30.8 yrs) were compared to 24 matched controls (mean age, 37.3 yrs) on 2 tachistoscopic tasks (Syllable Test and Dot Location Test) designed to measure verbal and spatial information processing in the 2 hemispheres. Unlike the controls, the schizophrenics showed a right hemisphere superiority both on the verbal and on the spatial tests, indicating left hemisphere dysfunction in the initial processing of verbal information. In Exp II, lateral eye movements, as an index of contralateral hemispheric activation, were measured in a group of 24 paranoid schizophrenics (mean age, 28.9 yrs), 24 nonparanoid schizophrenics (mean age, 32.7 yrs), and 24 matched controls (mean age, 31.2 yrs). The eye movements were elicited by presenting the Ss with verbal neutral, verbal emotional, spatial neutral, and spatial emotional questions. The schizophrenics had significantly more rightward eye movement, compared to controls, regardless of question type, indicating left hemisphere overactivation. Results suggest that schizophrenia is associated with a pattern consisting of both left hemisphere dysfunction and overactivation. (63 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Some relations between pleasant and unpleasant mood-related events and depression.

Studied (a) the validity of 2 methods of identifying reinforcing and punishing events, (b) their interrelations and dimensional structure, and (c) their relation to depression. A total of 909 Ss who were screened with the MMPI and classified as depressed, nondepressed psychiatric, or normal control rated the frequency and the subjective enjoyability or aversiveness of 320 pleasant (the Pleasant Event Schedule Form III) and 320 unpleasant events (the Unpleasant Events Schedule Form I). Some Ss also monitored the occurrence of pleasant and unpleasant events and rated their mood on a daily basis (Depression Adjective Check List). Correlations between each event and mood were calculated and used to identify 49 pleasant and 35 unpleasant "mood-related events." The proportion of Ss for whom the events correlated with mood and the mean enjoyability and aversiveness of the items were hypothesized to be measures of reinforcing or punishing impact. As predicted, statistically significant correlations between these 2 measures were obtained. The mood-related events also discriminated more strongly between depressed and nondepressed groups than the non-mood-related events did. The intercorrelations between pleasant and unpleasant events yielded separate and orthogonal dimensions of punishment and of reinforcement. (28 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Recall of pleasant and unpleasant words in depressed subjects.

In Exp I, 20 clinically depressed inpatients (mean age 39.9 yrs), 20 nondepressed inpatients (mean age 42.65 yrs), and 20 nonpatients (mean age 44 yrs) were shown a word list containing pleasant and unpleasant words. One-half of Ss in each group were given free-recall instructions, the other half were asked to rate each word on a pleasantness scale prior to recall. Results show that only depressed Ss given free-recall instructions recalled more unpleasant words than pleasant words. In Exp II, 30 clinically depressed inpatients (mean age 39.33 yrs) were shown a word list consisting of either (1) pleasant and unpleasant words, (2) unpleasant words, or (3) pleasant words. Results show that only Ss receiving the mixed list recalled more unpleasant than pleasant words. Findings support the hypothesis that depressed Ss selectively process unpleasant words and that this processing is at the expense of attention to pleasant words. (20 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)