Coherence and recurrency: maintenance,control and integration in working memory

Working memory (WM), including a ‘central executive’, is used to guide behavior by internal goals or intentions. We suggest that WM is best described as a set of three interdependent functions which are implemented in the prefrontal cortex (PFC). These functions are maintenance, control of attention and integration. A model for the maintenance function is presented, and we will argue that this model can be extended to incorporate the other functions as well. Maintenance is the capacity to briefly maintain information in the absence of corresponding input, and even in the face of distracting information. We will argue that maintenance is based on recurrent loops between PFC and posterior parts of the brain, and probably within PFC as well. In these loops information can be held temporarily in an active form. We show that a model based on these structural ideas is capable of maintaining a limited number of neural patterns. Not the size, but the coherence of patterns (i.e., a chunking principle based on synchronous firing of interconnected cell assemblies) determines the maintenance capacity. A mechanism that optimizes coherent pattern segregation, also poses a limit to the number of assemblies (about four) that can concurrently reverberate. Top-down attentional control (in perception, action and memory retrieval) can be modelled by the modulation and re-entry of top-down information to posterior parts of the brain. Hierarchically organized modules in PFC create the possibility for information integration. We argue that large-scale multimodal integration of information creates an ‘episodic buffer’, and may even suffice for implementing a central executive.     

Job-seeking and job-acquisition in high school students

We surveyed 225 Year 9 and 10 students at T1 regarding their attitude, social norms, control, experience, plans and intentions to find a part-time job while at school. Of these, 149 did not have a job and were surveyed again four months later about their job-seeking and job outcomes (104 responded at T2). Job-seeking intentions at T1 were associated with past experience, plans and beliefs that getting a job was the right thing to do. Job-seeking at T2 was associated with beliefs about the value of job-seeking. Job interviews attended were related to job-seeking, and job offers were related to interviews attended. Students with higher job-seeking intentions and behaviours differed on most variables from students with lower intentions and behaviours. Students need to be aware of the relationship between job-seeking, interviews and offers, and be provided with strategies that increase their interviews and assist to manage unsuccessful job attempts.     

Work, family and life-course fit: Does control over work time matter?

This study moves from “work-family” to a multi-dimensional “life-course fit” construct (employees’ cognitive assessments of resources, resource deficits, and resource demands), using a combined work-family, demands-control and ecology of the life course framing. It examined (1) impacts of job and home ecological systems on fit dimensions, and (2) whether control over work time predicted and mediated life-course fit outcomes. Using cluster analysis of survey data on a sample of 917 white-collar employees from Best Buy headquarters, we identified four job ecologies (corresponding to the job demands-job control model) and five home ecologies (theorizing an analogous home demands-home control model). Job and home ecologies predicted fit dimensions in an additive, not interactive, fashion. Employees’ work-time control predicted every life-course fit dimension and partially mediated effects of job ecologies, organizational tenure, and job category.     

Parental Influences on Young Women’s Certainty about Their Career Aspirations

Identity control theory (Kerpelman, Pittman, & Lamke, Journal of Adolescent Research, 12: 325–346, 1997) and the literature on possible selves (Markus & Nurius, American Psychologist, 41: 954–969, 1986) and family influences on adolescents’ vocational choices (e.g., Otto, Journal of Career Development, 27: 111–117, 2000; Whiston & Keller, The Counseling Psychologist, 32: 493–568, 2004) were used to guide this study of young women’s career aspirations. How mother–daughter and father–daughter relationships were associated with young women’s certainty about their anticipated future careers was addressed with data from 304 female undergraduates. Findings indicated that parent–daughter connectedness predicted the young women’s anticipated distress, as well as their willingness to change to fit parental views should their parents disagree with their career aspirations. In addition, anticipated distress mediated associations between willingness to change and connectedness with parents, and between willingness to change and father–daughter career discussions. Discussing career goals with mother increased mother’s influence, but decreased father’s influence, on daughter’s career certainty under conditions of father–daughter disagreement about career choice. The ability to separate her own feelings from those of her father was particularly important in reducing the daughter’s willingness to change her career goals to fit maternal or paternal expectations. Collectively, these findings offer additional insights about the role of parent–adolescent relationships in understanding young women’s career aspirations and note the importance of considering the distinct influences of mothers and fathers on their daughters’ career goals and plans.     

The Role of Cognitive Control in Cocaine Dependence

While hedonic and reward-related processes are central to drug use and dependence, this article focuses on the contribution that cognitive processes may make to addiction. In particular, attention is drawn to those processes involved in exercising control over behavior as drug dependence is characterized by risky, impulsive behavior. Functional neuroimaging implicates prefrontal deficits in cocaine dependence with an emerging picture of cocaine users having attentional biases towards drug-related stimuli, poor performance in laboratory tests of inhibitory control, and compromised monitoring and evaluation of their behavior. Combined, these deficits may contribute to the continuation of use in dependent individuals and may qualify as important targets for therapeutic interventions.     

Using suggestion to model different types of automatic writing

Our sense of self includes awareness of our thoughts and movements, and our control over them. This feeling can be altered or lost in neuropsychiatric disorders as well as in phenomena such as “automatic writing” whereby writing is attributed to an external source. Here, we employed suggestion in highly hypnotically suggestible participants to model various experiences of automatic writing during a sentence completion task. Results showed that the induction of hypnosis, without additional suggestion, was associated with a small but significant reduction of control, ownership, and awareness for writing. Targeted suggestions produced a double dissociation between thought and movement components of writing, for both feelings of control and ownership, and additionally, reduced awareness of writing. Overall, suggestion produced selective alterations in the control, ownership, and awareness of thought and motor components of writing, thus enabling key aspects of automatic writing, observed across different clinical and cultural settings, to be modelled.     

MMCS的心理测量学性能及中国大学生心理控制源的特点

以某民族大学的2006级学生为被试探讨了MMCS量表的心理测量学性能。结果表明MMCS的信度与国外基本相同,验证性因素分析发现在分解出正向和反向陈述效应后MMCS呈现出较好的模型拟合度。对MMCS的8个分量表总分所做的因素分析发现了清晰的因素结构,与理论假设非常符合。这些结果说明中国人也存在内外控的心理结构。但不同的是中国被试中内控和外控并不是相互独立的,也不是对立的两极,而是相关的,且表现出内控强于外控的倾向。通过与症状自评量表SCL-90的相关分析发现外控是不利于心理健康的,过强的内控也不好,而既不过分外控也不过分内控的适度控制方式可能是中国文化背景下最理想的心理控制方式。     

Entrepreneurial intention as developmental outcome

What predicts adults' entrepreneurial intentions? Utilizing a cross-sectional sample of 496 German scientists, we investigated a path model for the effects of entrepreneurial personality (Big Five profile), control beliefs, and recalled early entrepreneurial competence in adolescence (early inventions, leadership, commercial activities) on two types of entrepreneurial intentions (conditional and unconditional intentions). As expected, entrepreneurial personality and early entrepreneurial competence on the one hand and both types of entrepreneurial intentions on the other were associated. Findings of structural equation modeling further revealed indirect effects via control beliefs (e.g., mediation effects). The results highlight the importance of a life span developmental approach in entrepreneurship research and support the idea that entrepreneurship can be promoted early in life. The findings are discussed against the backdrop of the economic and societal values that entrepreneurship has in today's societies.     

元记忆监控对外语语音信息加工的影响

这项研究在元记忆监控环境下考查真实教学情景中学习者对外语语音信息加工的实际效果。结果表明：在外文单词听觉再认与外文单词听觉再现测验中,无论是及时测验还是延时测验,实验组的成绩都明显高于控制组,元记忆训练对外语语音信息的加工是有影响的。