Six-year-olds' perception of home literacy environment and its influence on children's literacy enjoyment,frequency, and early literacy skills

Home literacy environment (HLE) makes an important contribution to children's reading acquisition in early years. Even though some research on children's perception exists, children's reports about HLE have been neglected. The present study focuses on N = 281 six-year-old's reports about HLE and its influences on literacy enjoyment, frequency, and early literacy skills. Parents' educational background was expected to predict children-perceived HLE. A positive impact of active HLE on literacy enjoyment and frequency were found. HLE also mediates the relation between parents' background and enjoyment. The importance of children's perspective on HLE regarding family literacy programs is discussed.     

Who is dominating the Dutch neighbourhood? On the role of subsyllabic units in Dutch nonword reading

To assess the role of the subsyllabic units onset-nucleus (ON; spark) and rime (spark) in Dutch visual word recognition, we compared lexical decisions to four groups of nonwords in which the existence of ONs and rimes was orthogonally manipulated. Nonwords with existent ONs and/or rimes were rejected more slowly and less accurately. ON and rime neighbours thus influence Dutch nonword reading to the same extent. Simulations with the interactive activation model (McClelland & Rumelhart, 1981) revealed that this model with left-to-right coded representations could not replicate the effects found in the lexical decision data whereas an adapted version with representations of onset, nucleus, and coda could. Effects of the larger units ON and rime emerged from activation patterns created by the smaller units onset, nucleus, and coda.     

Contextual fear conditioning predicts subsequent avoidance behaviour in a virtual reality environment

Avoidance behaviour is a crucial component of fear and is importantly involved in the maintenance of anxiety disorders. Presumably, fear conditioning leads to avoidance of the feared object or context. A virtual reality contextual fear conditioning paradigm was used to investigate the association between explicit conditioning effects and subsequent avoidance behaviour. Mild electric shocks were administered in one context (anxiety context), but never in a second context (safety context). Subsequent avoidance behaviour was assessed by asking participants to choose two out of three contexts (a neutral context was added) to visit again. Participants avoided the anxiety context, but did not prefer the safety over the neutral context. Participants with substantial conditioning effects, as reflected in differential valence, arousal and anxiety ratings, avoided the anxiety context but not the safety context. In sum, we demonstrated an association between context conditioning effects on an explicit level and later avoidance behaviour.     

Seeking security or growth: a regulatory focus perspective on motivations in romantic relationships

Using a multimethod approach, we examined how regulatory focus shapes people's perceptual, behavioral, and emotional responses in different situations in romantic relationships. We first examined how chronic regulatory focus affects romantic partners' support perceptions and problem-solving behaviors while they were engaged in a conflict resolution discussion (Study 1). Next, we experimentally manipulated regulatory focus and tested its effects on partner perceptions when individuals recalled a prior conflict resolution discussion (Study 2). We then examined how chronic regulatory focus influences individuals' emotional responses to hypothetical relationship events (Study 3) and identified specific partner behaviors to which people should respond with regulatory goal-congruent emotions (Study 4). Strongly prevention-focused people perceived their partners as more distancing and less supportive during conflict (Studies 1 and 2), approached conflict resolution by discussing the details related to the conflict (Study 1), and experienced a negative relationship outcome with more agitation (Study 3). Strongly promotion-focused people perceived their partners as more supportive and less distancing (Studies 1 and 2), displayed more creative conflict resolution behavior (Study 1), and experienced a negative relationship outcome with more sadness and a favorable outcome with more positive emotions (Study 3). In Study 4, recalling irresponsible and responsible partner behaviors was associated with experiencing more prevention-focused emotions, whereas recalling affectionate and neglectful partner behaviors was associated with more promotion-focused emotions. The findings show that regulatory focus and approach-avoidance motivations influence certain interpersonal processes in similar ways, but regulatory focus theory also generates novel predictions on which approach-avoidance models are silent.     

Go/NoGo Performance in Boys with Tourette Syndrome

This study compared performance and performance monitoring in 19 boys with Tourette syndrome (TS) (12.64 years, ± 2.05) and 19 age-matched controls (13.16 years, ± 2.29) using a Go/NoGo task. The results indicated similar performance accuracy in the TS group and the control group. TS participants showed slower correct responses than the control group, whereas error response times were not different between the groups. The results are discussed with reference to inhibitory adaptive effects that may be employed by TS participants to maintain high accuracy at the cost of overall slower performance. These effects may be suspended prior to errors.     

CB1 cannabinoid receptors modulate kinase and phosphatase activity during extinction of conditioned fear in mice

Cannabinoid receptors type 1 (CB1) play a central role in both short-term and long-term extinction of auditory-cued fear memory. The molecular mechanisms underlying this function remain to be clarified. Several studies indicated extracellular signal-regulated kinases (ERKs), the phosphatidylinositol 3-kinase with its downstream effector AKT, and the phosphatase calcineurin as potential molecular substrates of extinction behavior. To test the involvement of these kinase and phosphatase activities in CB1-dependent extinction of conditioned fear behavior, conditioned CB1-deficient mice (CB1(-/-)) and wild-type littermates (CB1(+/+)) were sacrificed 30 min after recall of fear memory, and activation of ERKs, AKT, and calcineurin was examined by Western blot analysis in different brain regions. As compared with CB1(+/+), the nonreinforced tone presentation 24 h after auditory-cued fear conditioning led to lower levels of phosphorylated ERKs and/or calcineurin in the basolateral amygdala complex, ventromedial prefrontal cortex, dorsal hippocampus, and ventral hippocampus of CB1(-/-). In contrast, higher levels of phosphorylated p44 ERK and calcineurin were observed in the central nucleus of the amygdala of CB1(-/-). Phosphorylation of AKT was more pronounced in the basolateral amygdala complex and the dorsal hippocampus of CB1(-/-). We propose that the endogenous cannabinoid system modulates extinction of aversive memories, at least in part via regulation of the activity of kinases and phosphatases in a brain structure-dependent manner.     

How known constructions influence the acquisition of other constructions: the german passive and future constructions

This article suggests evidence for and reasons why prior acquisition may either facilitate or inhibit acquisition of a new construction. It investigates acquisition of the German passive and future constructions which contain a lexical verb with either the auxiliary sein "to be" or werden "to become", and are related through these to potential supporting constructions. We predicted that a supported construction should be acquired earlier, faster, and unusually rapidly. An inhibited construction should show an extended depressed usage. We analyzed a dense corpus of a German boy between 2;0 and 5;0. He acquired the sein- before the werden-passive. The former was supported by his prior acquisition of the sein copula, whereas the werden-passive itself supported one werden copula construction. He acquired the werden-future extremely slowly due to the hindrance of a semantically identical construction. These results fit with an emergentist approach in which apparently "sudden" acquisition is still due to gradual learning mechanisms.     

Cognitive procedural learning in patients with fronto-striatal lesions

Previous studies on the role of prefronto-striatal loop systems for cognitive procedural learning (PL) brought inconsistent results. To examine whether the integrity of the dorsolateral prefrontal loop is indispensable for normal cognitive PL, we examined the acquisition of cognitive skills in 35 patients with focal prefrontal lesions, focal caudate lesions, and Huntington's Disease (HD), and compared it with a control group. To examine the potential role of the processing demands made by the cognitive tasks, a set of tasks was applied whose acquisition places demand either on reasoning and problem solving, or on the establishment of fast and repetitive processing routines. The Pursuit Rotor task was also studied with the aim to re-examine earlier findings of a functional segregation of motor and complex prefronto-striatal loops. Deficits of cognitive and motor PL were found to be limited to certain tasks and groups. PL of one task, which demanded rapid, repetitive processing of visuo-spatial stimuli, was impaired in all patient groups. PL of two problem-solving tasks was impaired in patients with focal and degenerative caudate lesions only. None of the groups was impaired at PL of Mirror Reading, another task demanding rapid and repetitive visuo-spatial processing, and none was impaired in a fifth task of language skill. Deficits of motor learning were only observed in patients in whom the motor loop was affected. These results suggest that the dorsolateral prefronto-striatal loop is involved in the establishment of cognitive processing routines. The comparison of patients with and without caudate lesions suggests that disconnection of this circuit is critical. However, the normal acquisition of two cognitive tasks even in this group indicates that the integrity of the dorsolateral prefrontal loop is not mandatory for normal cognitive PL. We discuss these dissociations with regard to the demand profiles of the applied tasks and the locations of the lesions.     

Age differences in everyday problem-solving and decision-making effectiveness: a meta-analytic review

The authors report a meta-analysis of age differences in everyday problem-solving/decision-making effectiveness (EPSE). Effect sizes were calculated to reflect 3 age group comparisons: old versus young, young versus middle-aged, and middle-aged versus old. Findings from the meta-analysis of 28 separate studies with an aggregate of 4,482 participants do not support theories of preserved EPSE in late adulthood. Although significant age differences of moderate magnitude persisted across methodological and theoretical domains, rating criteria (experimenter vs. participant) emerged as a significant moderator of the effect magnitude and direction. In addition, EPSE in older adults was bolstered when problem content was interpersonal and when samples were highly educated. Finally, the current results support the conceptual integration of findings from the everyday problem-solving and everyday decision-making literatures.