From Complexity Concepts to Creative Applications

A complexity cosmography is introduced as construing a world that is self-organizing, dynamic, and emergent, and that comprises organic entities that too are self-organizing, dynamic, and emergent. Following critical reflection into the nature of utilising complexity in social inquiry, specific images, vocabularies and complexity-based methods and techniques as developed by the authors are introduced.     

Appearance matters: Attentional orienting by new objects in the precueing paradigm

Five experiments examined whether the appearance of a new object is able to orient attention in the absence of an accompanying sensory transient. A variant of the precueing paradigm (Posner & Cohen, 1984 Posner, M. I. and Cohen, Y. 1984. “Components of attention”. In Attention and performance X, Edited by: Bouma, H. and Bouwhuis, D. G. 55–66. Hove, , UK: Lawrence Erlbaum Associates Ltd.  [Google Scholar]) was employed in which the cue was the onset of a new object. Crucially, the new object's appearance was not associated with any unique sensory transient. This was achieved by using the variant “annulus” procedure recently developed by Franconeri, Hollingworth, and Simons (2005). Results showed that unless observers had an attentional set explicitly biased against onset, a validity effect was observed such that response times were shorter for targets occurring at the location of the new object relative to when targets occurred at the location of the “old” object. We conclude that new onsets do not need to be associated with a unique sensory transient in order to orient attention.     

Functional brain activation to emotional and nonemotional faces in healthy children: Evidence for developmentally undifferentiated amygdala function during the school-age period

The amygdala is a key region in emotion processing. In particular, fMRI studies have demonstrated that the amygdala is active during the viewing of emotional faces. Previous research has consistently found greater amygdala responses to fearful than to neutral faces in adults, convergent with a focus in the animal literature on the amygdala’s role in fear processing. Studies have shown that the amygdala also responds differentially to other facial emotion types in adults. Yet the literature regarding when this differential amygdala responsivity develops is limited and mixed. Thus, the goal of the present study was to examine amygdala responses to emotional and neutral faces in a relatively large sample of healthy school-age children (N?=?52). Although the amygdala was active in response to emotional and neutral faces, the results did not support the hypothesis that the amygdala responds differentially to emotional faces in 7- to 12-year-old children. Nonetheless, amygdala activity was correlated with the severity of subclinical depression symptoms and with emotional regulation skills. Additionally, sex differences were observed in frontal, temporal, and visual regions, as well as effects of pubertal development in visual regions. These findings suggest important differences in amygdala reactivity in childhood.     

The Role of Evidence Diversity and Explanation in 4- and 5-Year-Olds’ Resolution of Counterevidence

Three experiments examined whether 4- and 5-year-olds can explicitly revise uncertain beliefs in light of disconfirming evidence. We considered 2 factors that might influence belief revision: a) the type and variability of evidence provided, and b) whether children generated an explanation of their initial hypothesis. When provided with limited observed evidence, children revised their belief about their initial guess greater than chance expectations, but differences were not observed when the quality of the explanation was considered (Experiment 1). In a similar paradigm, children revised their beliefs more often than chance when asked to explain or describe their initial belief when shown more diverse counterevidence (Experiment 2) or when told that their initial belief was incorrect (Experiment 3). Overall, these data suggest that preschoolers have nascent capacities for explicit belief revision in light of counterevidence.     

Healthy Nests Transition to Parenthood Program: A Mixed-Methods Study

Intimate partner relationship distress is associated with a wide range of negative adult and child outcomes. The transition to parenthood is often a time in the life of a couple where relationship distress increases and satisfaction and intimacy decrease and thus is an ideal time for targeted intervention. The Healthy Nests (HN) intervention is a three-meeting, strength-focused couples intervention for first-time parents designed to decrease maladaptive relationship conflict and increase couple well-being. The authors conducted a mixed-methods exploratory study investigating participants' overall experiences with the HN intervention and measured outcomes associated with relationship satisfaction, help seeking, father involvement, substance use, and depression. A total of 130 parents (65 dyads) participated in a randomized intervention and educational materials–only alternative intervention. Twenty dyads were interviewed as a part of the qualitative portion of the study. While the authors did not find significant quantitative effects on key outcomes, the qualitative findings suggested that participants had a positive experience with the HN intervention and indicated it was useful to have designated time and space to communicate as a couple. Qualitative findings also suggest that the focus on “aspects of strength” and “areas of change” in their relationship was useful. Implications for practice, research, and training are discussed.     

Amazon Mechanical Turk in Organizational Psychology: An Evaluation and Practical Recommendations

Purpose

Amazon Mechanical Turk is an increasingly popular data source in the organizational psychology research community. This paper presents an evaluation of MTurk and provides a set of practical recommendations for researchers using MTurk.

Design/Methodology/Approach

We present an evaluation of methodological concerns related to the use of MTurk and potential threats to validity inferences. Based on our evaluation, we also provide a set of recommendations to strengthen validity inferences using MTurk samples.

Findings

Although MTurk samples can overcome some important validity concerns, there are other limitations researchers must consider in light of their research objectives. Researchers should carefully evaluate the appropriateness and quality of MTurk samples based on the different issues we discuss in our evaluation.

Implications

There is not a one-size-fits-all answer to whether MTurk is appropriate for a research study. The answer depends on the research questions and the data collection and analytic procedures adopted. The quality of the data is not defined by the data source per se, but rather the decisions researchers make during the stages of study design, data collection, and data analysis.

Originality/Value

The current paper extends the literature by evaluating MTurk in a more comprehensive manner than in prior reviews. Past review papers focused primarily on internal and external validity, with less attention paid to statistical conclusion and construct validity—which are equally important in making accurate inferences about research findings. This paper also provides a set of practical recommendations in addressing validity concerns when using MTurk.

     

The test–retest reliability of the latent construct of executive function depends on whether tasks are represented as formative or reflective indicators

This study investigates the test–retest reliability of a battery of executive function (EF) tasks with a specific interest in testing whether the method that is used to create a battery-wide score would result in differences in the apparent test–retest reliability of children’s performance. A total of 188 4-year-olds completed a battery of computerized EF tasks twice across a period of approximately two weeks. Two different approaches were used to create a score that indexed children’s overall performance on the battery—i.e., (1) the mean score of all completed tasks and (2) a factor score estimate which used confirmatory factor analysis (CFA). Pearson and intra-class correlations were used to investigate the test–retest reliability of individual EF tasks, as well as an overall battery score. Consistent with previous studies, the test–retest reliability of individual tasks was modest (rs ≈ .60). The test–retest reliability of the overall battery scores differed depending on the scoring approach (r_mean = .72; r_{factor_score} = .99). It is concluded that the children’s performance on individual EF tasks exhibit modest levels of test–retest reliability. This underscores the importance of administering multiple tasks and aggregating performance across these tasks in order to improve precision of measurement. However, the specific strategy that is used has a large impact on the apparent test–retest reliability of the overall score. These results replicate our earlier findings and provide additional cautionary evidence against the routine use of factor analytic approaches for representing individual performance across a battery of EF tasks.     

Individual differences in hedonic capacity,depressed mood,and affective states predict emotional reactivity

Identifying factors that contribute to inter-individual differences in emotional reactivity is central to understanding the basic mechanisms that give rise to adaptive emotion reactivity and to disruptions that may occur in psychopathology. The current study related emotional reactivity in an unselected young adult sample (N?=?101) to individual difference factors relevant to emotional functioning and mood pathology, specifically anhedonia, depressed mood, and current affective state. To assess emotional reactivity, participants rated their emotional responses to 100 pictures from the International Affective Picture System. Increased self-reported anhedonia (i.e. reduced hedonic capacity) predicted blunted emotional reactivity to both positive and negative images, relative to neutral images, while elevated depressed mood predicted potentiated emotional reactivity to negative vs. neutral images. Anhedonia also accounted for far greater variance in emotional reactivity than depressed mood. Further, more positive affective state predicted potentiated reactivity to positive versus neutral images while more negative affective state predicted potentiated reactivity to negative versus neutral images beyond effects of anhedonia and depressed mood. The current study identified separable effects of anhedonia, depressed mood, and current affect on emotional reactivity.     

Contextual memory and skill transfer in category search

In three experiments, we examined transfer and contextual memory in a category search task. Each experiment included two phases (training and test), during which participants searched through category and exemplar menus for targets. In Experiment 1, the targets were from one of two domains during training (grocery store or department store); the domain was either the same or changed at test. Also, the categories were organized in one of two ways (alphabetically or semantically); the organization either remained the same or changed at test. In Experiments 2 and 3, domain and organization were held constant; however, categories or exemplars were the same, partially replaced, or entirely replaced across phases in order to simulate the dynamic nature of category search in everyday situations. Transfer occurred at test when the category organization or domain was maintained and when the categories or exemplars matched (partially or entirely) those at training. These results demonstrate that transfer is facilitated by overlap in training and testing contexts.     

Do Cognitive Changes Accompany Developments in the Adolescent Brain?

ABSTRACT— The news that the brain continues to develop through much of adolescence risks becoming an explanation for anything and everything about teenagers and suggests the need for closer analysis. Central to such analysis is clarifying what develops at a psychological level during these years. An examination of contemporary research data on adolescent cognitive development identifies increased executive control as a major dimension of cognitive development during the second decade of life. Such development is consistent with changes occurring in the brain during this period.