Infants’ vocalizations at 6 months predict their productive vocabulary at one year

Long before their first words, children communicate by using speech-like vocalizations. These protophones might be indicative of infants’ later language development. We here examined infants’ (n = 56) early vocalizations at 6 months (vocal reactivity scale of the IBQ-R) as a predictor of their expressive and receptive language at 12 months (German version of the CDI). Regression analyses revealed vocalizations to significantly predict expressive, but not receptive language. Our findings in German-learning 6-month-olds extend previous predictive evidence of early vocalizations reported for older infants. Together these findings are informative in light of early assessments monitoring typical and atypical language development.     

Do postpartum anxiety and breastfeeding self-efficacy and bonding at early postpartum predict postpartum depression and the breastfeeding method?

We investigated whether postpartum anxiety (PPA) and breastfeeding self-efficacy and bonding at the early postpartum period can be used to predict postpartum depression and the breastfeeding method, and we sought to identify factors related to postpartum depression. Of the 510 eligible women, 185 (36%) returned the questionnaire on all three occasions (1 day, 3 days, and 1 month after childbirth). The mothers' progress on the State-Trait Anxiety Inventory (STAI), Breastfeeding Self-Efficacy Scale Short Form (BFSES-SF), and Postnatal Bonding Questionnaire (PBQ) was observed over three periods. A repeated-measures ANOVA revealed that the mothers at high risk of developing postpartum depression (PPD) were those who did not show an increase in BFSES-SF score at early postpartum, and mothers whose bonding disorders have deteriorated rapidly. The results of the logistic regression analysis revealed a significant difference in employment as a factor related to postpartum depression. Compared to Regular, Part-time status was 4.4 times more likely and Unemployed status was 2.3 times more likely to cause postpartum depression. For the early detection of PPD, it is necessary to identify (1) mothers who do not show an increase in the BFSES-SF score, (2) mothers whose bonding disorders have deteriorated rapidly, and (3) part-time or unemployed mothers as characteristic of postpartum depression.     

Can infant self-locomotion and spatial exploration predict spatial memory at school age?

According to an embodied view of development sensorimotor activity plays a central role in cognitive development. Following this idea, we studied whether the age of achieving self-locomotion milestones and spatial exploration during the first years of life predict spatial memory at (pre)school age. Spatial memory was assessed in 51 children at ages four and six years. Parents reported retrospectively about ages of attainment of self-locomotion milestones and about the children's spatial exploration behaviour during infancy and early toddlerhood. Results show that spatial exploration positively predicts spatial memory at both ages. The age of attainment of self- locomotion does not predict spatial memory at ages four and six. These findings extend previous work that showed a relation between exploration and spatial cognition over a short period of time. Results provide preliminary support to the hypothesis, suggesting that spatial exploration predicts spatial memory also over longer periods of time.     

Do behavioral disturbances in persons with Alzheimer's disease predict caregiver depression over time?

Random effects models were used to examine the association between behavioral disturbances in persons with Alzheimer's disease (N = 90) and caregiver depressive symptoms at 2-month intervals over an 18-month period. There was substantial variability in trajectories of change in caregiver depressive symptoms over time but no systematic increase in distress despite increased severity of dementia symptoms. Total behavioral disturbances were associated with higher levels of caregiver depressive symptoms: this effect was primarily attributable to aggressive behaviors. No consistent departure from linearity was evident in the relationship between behavior and depression over time.     

Is overgeneral autobiographical memory an isolated memory phenomenon in major depression?

The present study explored the relation between overgeneral autobiographical memory (AM) and other aspects of memory functioning in depression. A total of 26 patients with major depressive disorder completed a set of memory tasks measuring AM specificity (AMT; Williams & Broadbent, 1986), working memory, semantic memory, verbal learning, delayed verbal recall, recognition memory, and source memory. Reduced specificity of AM was related to poor working memory (central executive functioning) and poor source memory. The former finding conforms to the idea that the voluntary retrieval of specific autobiographical memories (AMs) involves central executive processes (e.g., Conway & Pleydell-Pearce, 2000 Conway, M. A. and Pleydell-Pearce, C. W. 2000. The construction of autobiographical memories in the self-memory system. Psychological Review, 107: 261–288. [Crossref], [PubMed], [Web of Science ®] , [Google Scholar]). The latter finding replicates and extends recent findings suggesting that overgeneral AM is part of a broader memory deficit in retrieving the specific details of the context in which information was acquired (Ramponi, Barnard, & Nimmo-Smith, 2004 Raes , F. , Hermans , D. , Williams , J. M. G. , Demyttenaere , K. , Sabbe , B. , Pieters , G . & Eelen , P. ( 2004 ). Reduced specificity of autobiographical memory: A mediator between rumination and ineffective social problem solving in major depression? Journal of affective disorders , 87 , 331 – 335  [Google Scholar]). Furthermore, in line with Ramponi et al. (2004 Raes , F. , Hermans , D. , Williams , J. M. G. , Demyttenaere , K. , Sabbe , B. , Pieters , G . & Eelen , P. ( 2004 ). Reduced specificity of autobiographical memory: A mediator between rumination and ineffective social problem solving in major depression? Journal of affective disorders , 87 , 331 – 335  [Google Scholar]), rumination was found to be related to both overgeneral AM and poor source memory.     

Do personality characteristics and beliefs predict intra‐group bullying between prisoners?

This study assesses how beliefs about aggression and personality can predict engagement in intra‐group bullying among prisoners. A sample of 213 adult male prisoners completed the DIPC‐SCALED (bullying behavior), the EXPAGG (beliefs toward aggression), and the IPIP (a five‐factor measure of personality). It was predicted that bullies would hold greater instrumental beliefs supporting the use of aggression than the other categories, with perpetrators reporting lower scores on agreeableness, conscientiousness, and openness to experience, and higher scores on neuroticism (i.e. low scores on emotional stability) than the remaining sample. Bullies and bully‐victims endorsed greater instrumental aggressive beliefs than the victim category. Only one perpetrator group, bullies were predicted by reduced levels of agreeableness and increased levels of neuroticism, whereas bully/victims were predicted by decreased levels of neuroticism. Limitations of this study and directions for future research are discussed. Aggr. Behav. 36:261–270, 2010. © 2010 Wiley‐Liss, Inc.     

Do subjective measures of attention and memory predict actual performance? Metacognition in older couples

Older individuals who recognize their cognitive difficulties are more likely to adjust their everyday life to their actual cognitive functioning, particularly when they are able to estimate their abilities accurately. We assessed self- and spouse-ratings of memory and attention difficulties in everyday life of healthy, older individuals and compared them with the respective test performance. Eighty-four older individuals (women's age, M = 67.4 years, SD = 5.2; men's age, M = 68.5 years, SD = 4.9) completed both the self and the spouse versions of the Attention Deficit Questionnaire and the Everyday Memory Questionnaire and completed two neuropsychological tests. Using the residual score approach, subjective metacognitive measures of memory and attention were created and compared with actual test performance. Significant associations between subjective and objective scores were found only for men and only for episodic memory measures. Men who underreported memory difficulties performed more poorly; men who overreported memory difficulties performed better. Men's recognition performance was best predicted by subjective measures (R2 = .25), followed by delayed recall (R2 = .14) and forgetting rate (R2 = .13). The results indicate gender-specific differences in metacognitive accuracy and predictive validity of subjective ratings.     

Is overgeneral autobiographical memory an isolated memory phenomenon in major depression?

The present study explored the relation between overgeneral autobiographical memory (AM) and other aspects of memory functioning in depression. A total of 26 patients with major depressive disorder completed a set of memory tasks measuring AM specificity (AMT; Williams & Broadbent, 1986), working memory, semantic memory, verbal learning, delayed verbal recall, recognition memory, and source memory. Reduced specificity of AM was related to poor working memory (central executive functioning) and poor source memory. The former finding conforms to the idea that the voluntary retrieval of specific autobiographical memories (AMs) involves central executive processes (e.g., Conway & Pleydell-Pearce, 2000). The latter finding replicates and extends recent findings suggesting that overgeneral AM is part of a broader memory deficit in retrieving the specific details of the context in which information was acquired (Ramponi, Barnard, & Nimmo-Smith, 2004). Furthermore, in line with Ramponi et al. (2004), rumination was found to be related to both overgeneral AM and poor source memory.     

Do explicit memory manipulations affect the memory blocking effect?

The memory blocking effect (MBE) occurs when people are prevented from completing word fragments because they studied orthographically similar words. Across 3 experiments, we investigated how manipulations that influence explicit memory tasks would influence the MBE. Although a significant MBE was observed in all 3 experiments, manipulating depth of processing (Experiment 1), time to complete the fragments (Experiment 2), and awareness of the MBE (Experiment 3) did not change the magnitude of the MBE. We discuss these results in the context of a suppression mechanism involved in retrieval-induced forgetting.     

Can imaginal exposure reduce intrusive memories in depression? A case study

The presence of intrusive memories as an overlapping feature of depression and posttraumatic stress disorder (PTSD) raises the possibility that common therapeutic approaches may be effective. Imaginal exposure (IE) is the gold-standard treatment for PTSD and directly reduces both PTSD and depression symptoms in traumatized individuals. The objective of this pilot study was to use a single-case design to trial the use of IE to target intrusive memories of a negative life event as a treatment for major depression. The participant was experiencing depression after a relationship breakup. Pre-posttreatment measures (clinical interview and self-report) showed a decrease in frequency of intrusive memories and improved mood, such that the participant no longer met diagnostic criteria for major depression at posttreatment or at 6-month follow-up. This case is an important first step in demonstrating the possible value of IE as an inclusion in therapy to reduce intrusive memories in patients whose depressive episode is precipitated by a stressor. Further application of IE to additional depressed clients in the context of a case series is needed to provide preliminary evidence of its efficacy as a treatment for depressive disorders.     

Do eating disorder voice characteristics predict treatment outcomes in anorexia nervosa? A pilot study

Individuals with anorexia nervosa often describe experiencing an internal “voice” of their disorder, which previous research has associated with multiple dimensions of eating pathology. This pilot study examined whether eating disorder measures use invoice characteristics at the outset of outpatient therapy predicted changes in disordered eating over the course of treatment. Participants were 14 individuals meeting ICD-10 criteria for anorexia nervosa. Participants completed measures relating to the severity of disordered eating and voice-related characteristics (perceived voice power and metacognitive appraisals about its nature) at the start and end of therapy. Results indicated that the perceived power of the eating disorder was reduced over the course of outpatient therapy, although its other characteristics remained stable. Greater levels of voice power, omnipotence and benevolence at the outset of therapy were related to greater improvements in eating attitudes. No voice-related characteristics were associated with changes in weight. These findings suggest that voice-related appraisals do not obstruct the effectiveness of outpatient therapies for anorexia nervosa. Further studies are needed to ratify these preliminary findings.     

Do personality factors predict job satisfaction?

Two studies investigated the relationships between personality traits and aspects of job satisfaction. In Study 1, job applicants (n=250) completed the Eysenck Personality Profiler and the Work Values Questionnaire (WVQ), which requires respondents to rate various work-related facets according to the extent to which they contribute to their job satisfaction. These facets were combined into two composites (hygiene and motivator) based on previous research. The three personality superfactors accounted for a small percentage of the variance in importance ratings (about 5%). In Study 2, employees (n=82) completed a measure of the ‘Big Five’ personality traits and the Job Satisfaction Questionnaire (JSQ), which assesses both what respondents consider as important in their work environment as well as their satisfaction with their current job. Importance ratings were again combined into two composites while job satisfaction ratings were factor analyzed and three factors, differentiated along hygiene versus motivator lines, emerged. Personality traits again accounted for a small percentage of the total variance both in importance ratings and in levels of job satisfaction. It is concluded that personality does not have a strong or consistent influence either on what individuals perceive as important in their work environment or on their levels of job satisfaction.     

Mood-congruent memory in depression: emotional priming or elaboration?

We investigated whether mood-congruent memory (MCM) bias in depression is a function of implicit or explicit memory. Implicit memory is taken as a measure of ease of activation, whereas explicit memory also taps elaboration. As expected, MCM bias was found in the explicit memory task but not in the implicit memory task. We believe this finding supports the involvement of elaborative mechanisms in MCM. In addition, memory bias was found with words related to depression but not with words denoting physical threat. Thus, the MCM bias in explicit memory was found to be specific to information that was congruent with depression rather than to all negative information.     

Do young chimpanzees have extraordinary working memory?

Do chimpanzees have better spatial working memory than humans? In a previous report, a juvenile chimpanzee outperformed 3 university students on memory for briefly displayed digits in a spatial array (Inoue & Matsuzawa, 2007). The authors described these abilities as extraordinary and likened the chimpanzee's performance to eidetic memory. However, the chimpanzee received extensive practice on a non-time-pressured version of the task; the human subjects received none. Here we report that, after adequate practice, 2 university students substantially outperformed the chimpanzee. There is no evidence for a superior or qualitatively different spatial memory system in chimpanzees.     

Do the mentally retarded have poor memory?

The hypothesis that mentally retarded persons have a short-term memory deficit whixh is due to inadequate rehearsal strategies is reexamined. A reevaluation of results of a number of experiments suggests that normal and retarded persons differ on short-term memory tasks, and the superiority of normals is present from the time of initial stimulus exposure. While some evidence for slope differences in retention curves is found in a few tasks, it is not strong support for memory differences. The hypothesis that “memory” differences are due to differential encoding as a result of more adequate rehearsal by the normal subjects is unacceptable. If this were the case, some differences in slope of retention curves could be expected unless rehearsal beyond the encoding stage was totally precluded. The review points to a need for an empirical reevaluation of the issue with a full recognition that deficits in particular processes may characterize some retarded persons and not others.     

Do relational and structural characteristics of negative school environments independently predict immigrant adolescents’ academic achievement?

A critical issue facing the majority of immigrant adolescents in U.S. public schools is persistent academic underperformance. Using data from the Children of Immigrants Longitudinal Study, this study investigates the extent to which negative social environments in U.S. public schools predict the academic achievement of immigrant adolescents. Importantly, we simultaneously examine the roles of both the relational (individual-level) and structural (school-level) characteristics of these negative social environments. Multilevel structural equation modeling revealed that immigrant students who are embedded in more negative relationships (e.g., having peers who discriminate against them) have lower levels of academic achievement. These predictive effects of individual-level negative social environments on academic achievement are mediated by both perceived school safety and educational expectations. Furthermore, we find double mediation effects (i.e., three-pathway mediations) via perceptions of school safety and educational expectations. The existence of these double mediation effects implies that relational characteristics strongly predict immigrant adolescents’ perceptions, attitudes, and school outcomes. Finally, we find that structural characteristics of negative social environments in U.S. public schools (i.e., total student enrollment and school-level dropout rate) also negatively predict immigrant adolescent achievement. We discuss the implications of these findings for improving immigrant adolescents’ achievements in U.S. public schools.     

How are depression and autobiographical memory retrieval related to culture?

This study investigated how culture influences the association between autobiographical memory retrieval and depression. Thirty clinically depressed patients and 30 controls, 15 each from Britain and Taiwan, completed the English and Chinese versions of the Autobiographical Memory Cueing Task (AMT). Overall, the depressed individuals from both cultural groups retrieved significantly fewer specific and more categoric autobiographical memories than their matched, nondepressed controls. Within the control groups, the British participants retrieved significantly more specific autobiographical memories and fewer categoric memories than their Taiwanese counterparts. These results suggest that difficulty in retrieving specific autobiographical memories typical of depression may be a cognitive bias that occurs across cultures.     

Do automatic mental associations detect a flashbulb memory?

Flashbulb memories (FBMs) are defined as detailed memories for the reception context in which people first heard of a public and emotionally relevant event. For many years researchers have been debating whether FBMs can be considered a special class of emotional memories, or whether they suffer the same fate as ordinary autobiographical formations. The debate on the real existence of this special class of memories reflects the difficulty of establishing their accuracy. Three indices have been defined as proxies for FBM accuracy: specificity of recalled details, individuals’ confidence in their memory, and memory consistency over time. However, all approaches to FBM assessment have been based on explicit self-report measures. In two studies we aimed to detect FBMs for two emotional public events, by simultaneously employing explicit traditional FBM measures and implicit measures based on the autobiographical Implicit Association Test (aIAT). Jointly considered, the results from the two studies showed that the implicit measures were able to discriminate a FBM, and appeared significantly associated with explicit traditional measures of FBM Specificity, Confidence, and Consistency. Both explicit and implicit assessments concurred to correctly estimate a FBM. Implications for the FBM debate are discussed.     

Does working memory capacity predict cross-modally induced failures of awareness?

People often fail to notice unexpected stimuli when they are focusing attention on another task. Most studies of this phenomenon address visual failures induced by visual attention tasks (inattentional blindness). Yet, such failures also occur within audition (inattentional deafness), and people can even miss unexpected events in one sensory modality when focusing attention on tasks in another modality. Such cross-modal failures are revealing because they suggest the existence of a common, central resource limitation. And, such central limits might be predicted from individual differences in cognitive capacity. We replicated earlier evidence, establishing substantial rates of inattentional deafness during a visual task and inattentional blindness during an auditory task. However, neither individual working memory capacity nor the ability to perform the primary task predicted noticing in either modality. Thus, individual differences in cognitive capacity did not predict failures of awareness even though the failures presumably resulted from central resource limitations.