Is the go/no-go lexical decision task preferable to the yes/no task with developing readers?

The lexical decision task is probably the most common laboratory visual word identification task together with the naming task. In the usual setup, participants need to press the “yes” button when the stimulus is a word and the “no” button when the stimulus is not a word. A number of studies have employed this task with developing readers; however, error rates and/or response times tend to be quite high. One way to make the task easier for young readers is by employing a go/no-go procedure: “If word, press ‘yes’; if not, refrain from responding.” Here we conducted a lexical decision experiment that systematically compared the yes/no and go/no-go variants of the lexical decision task with developing readers (second- and fourth-grade children). Results showed that (a) error rates for words and nonwords were much lower in the go/no-go task than in the yes/no task, (b) lexical decision times were substantially faster in the go/no-go task, and (c) there was less variability in the latency data of the go/no-go task for high-frequency words. Thus, the go/no-go lexical decision task is preferable to the “standard” yes/no task when conducting experiments with developing readers.     

Potentiation and overshadowing of shape by wall color in a kite-shaped maze using rats in a foraging task

The interaction between redundant geometric and featural cues in open field search tasks has been examined widely with results that are not always consistent. Cheng (1986) found evidence that when searching for food in rectangular environments, rats used the geometrical characteristics of the environment rather than local featural cues, suggesting that geometry had overshadowed featural cues. More recently, Graham et al. (2006) and Pearce et al. (2006) found that wall color facilitated (potentiated) learning about the shape of the environment by rats in a kite-shaped water maze. The first experiment in the present research replicated the paradigm used by Graham et al. and Pearce et al. using rats in a foraging situation, but with conditions similar, and found the same results, potentiation of shape by color. Experiments 2 and 3 revealed overshadowing instead of potentiation of shape by wall color under the same conditions except that the wall colors of the test environment were not the same as those used during training. The results are consistent with an analysis of the role of associations formed between wall color and geometry in such situations (Rhodes et al., 2009) and extend our understanding of how featural and spatial cues interact.     

Exploring the enactment effect from an information processing view: What can we learn from serial position analyses?

The focus of the present article was to analyze processes that determine the enactment and age effect in a multi-trial free recall paradigm by looking at the serial position effects. In an experimental study (see Schatz et al 2010), the performance-enhancing effect of enactive encoding and repeated learning was tested with older and younger participants. As expected, there was a steady improvement of memory performance as a function of repeated learning regardless of age. In addition, enactive encoding led to a better memory performance than verbal encoding in both age groups. Furthermore, younger adults outperformed the elderly regardless of type of encoding. Analyses in the present article show that encoding by enacting seems to profit especially from remembering the last items of a presented list. Regarding age differences, younger outperformed older participants in nearly all item positions. The performance enhancement after task repetition is due to a higher amount of recalled items in the middle positions in a subject performed task (SPT) and a verbal task (VT) as well as the last positions of a learned list in VT.     

Your heart makes my heart move: Cues of social connectedness cause shared emotions and physiological states among strangers

Two experiments tested the hypothesis that cues of social connectedness could lead even new interaction partners to experience shared emotional and physiological states. In Experiment 1, a confederate prepared for a stress-inducing task. Participants who had been led to feel socially connected to the confederate reported feeling greater stress than participants who had not. In Experiment 2, a confederate ran vigorously in place. Socially-connected participants had greater cardiovascular reactivity (heart rate and blood pressure) than controls. Each study held constant exposure to the confederate. The results suggest that the sharing of psychological and physiological states does not occur only between long-standing relationship partners, but can also result from even subtle experiences of social connectedness. These findings illustrate the dynamic and fluid ways in which important aspects of self can change in response to cues of social relatedness.     

Exposure to music with prosocial lyrics reduces aggression: First evidence and test of the underlying mechanism

Previous research has predominantly focused on negative effects of music exposure by demonstrating that listening to antisocial music increases aggression and aggression-related variables. The present research tests the idea that listening to prosocial (relative to neutral) music decreases aggressive outcomes. In fact, five studies revealed that prosocial music exposure decreased aggressive cognition, affect, and behavior. Mediational analyses showed that the effect of music condition on aggressive behavior was accounted for by differences in aggressive affect. Implications of these results for the predictive validity of the general learning model (Buckley & Anderson, 2006) for the effects of media exposure on social tendencies are discussed.     

Individuals differ in the attentional blink: Mental speed and intra-subject stability matter

The failure to correctly report two targets (“T₁”, “T₂”) that follow each other in close temporal proximity has been called the “attentional blink” (AB). The AB has, so far, mainly been studied using experimental approaches. The present studies investigated individual differences in AB performance, revealing (among further findings) a high positive correlation between the accuracies of detecting the two targets correctly (r = 0.69); and between T₂∣T₁ accuracy and psychometric intelligence (0.41 ≤ r ≤ 0.43) and RT variability in short-term and working memory (− 0.38 ≤ r ≤ − 0.45). Together, these results support important aspects of major theoretical accounts of the AB from an individual differences perspective and introduce intelligence and intra-subject stability as contributing factors in AB performance.     

The expression and regulation of anger in toddlers: relations to maternal behavior and mental representations

Anger is an intense and adaptive approach emotion that undergoes significant development during the toddler years. We assessed the expression of anger and the strategies toddlers use to regulate it in relation to maternal behavior and mental representations. Seventy-four toddlers were observed in three anger-eliciting paradigms: toy removal (TR), still-face (SF), and delayed gratification (DG). Anger expression and three clusters of regulatory behaviors were micro-coded: putative regulatory behaviors, attention manipulation, and play behaviors. Maternal relational style was coded for sensitivity and intrusiveness, and mental representations of the mother-child relationship were assessed for joy and anger. Children expressed the most anger during the TR, less during the SF, and minimally during the DG. Use of putative regulatory behaviors was highest during the SF, whereas during the TR children employed newly acquired skills, such as focused attention and substitutive play, in the service of anger regulation. Anger expression and regulation were differentially related to the negative and positive components in the mother's behavior and representations, and maternal intrusiveness moderated the relations between angry representations and the degree of child anger during the SF. Results are consistent with dynamic models of emotions and accord with perspectives that emphasize the role of sensitive parenting in facilitating emotion regulation.     

Asymmetrical brain activity induced by voluntary spatial attention depends on the visual hemifield: a functional near-infrared spectroscopy study

The effect of the visual hemifield to which spatial attention was oriented on the activities of the posterior parietal and occipital visual cortices was examined using functional near-infrared spectroscopy in order to investigate the neural substrates of voluntary visuospatial attention. Our brain imaging data support the theory put forth in a previous psychophysical study, namely, the attentional resources for the left and right visual hemifields are distinct. Increasing the attentional load asymmetrically increased the brain activity. Increase in attentional load produced a greater increase in brain activity in the case of the left visual hemifield than in the case of the right visual hemifield. This asymmetry was observed in all the examined brain areas, including the right and left occipital and parietal cortices. These results suggest the existence of asymmetrical inhibitory interactions between the hemispheres and the presence of an extensive inhibitory network.