Mismatch negativity elicited by tones and speech sounds: changed topographical distribution in aphasia

This study used the event-related brain potential mismatch negativity (MMN) to investigate preconscious discrimination of harmonically rich tones (differing in duration) and consonant-vowel syllables (differing in the initial consonant) in aphasia. Eighteen Norwegian aphasic patients, examined on average 3 months after brain injury, were compared to 11 healthy controls. The main finding was a difference in topographic distribution of the MMN: the aphasia group showed a less lateralized and centralized topographic pattern especially to CV syllables, which is consistent with a reduced temporal lobe processing contribution and an increased right hemisphere activation. No correlations between MMN amplitude and aphasia test results were found.     

Effects of Personal Epistemology on the Understanding of Multiple Texts

We examined whether the text understanding of students holding naïve and sophisticated epistemological beliefs was differentially affected by text format, also controlling for effects of gender, word decoding, and prior knowledge on understanding. The participants were 39 Norwegian first-year teacher students, and the topic of reading was attention-deficit hyperactivity disorder (ADHD). It was found that only readers holding sophisticated epistemological beliefs displayed adequate understanding when reading multiple, partly conflicting, texts about ADHD, whereas students holding naïve epistemological beliefs gained better understanding when reading a single textbook-like source with identical content. This finding, however, depended on the level of understanding being measured by the criterial task, with only the task measuring deeper situational text understanding showing an interaction between epistemological beliefs and text format. This study provides evidence that not only knowledge itself, but also personal beliefs about knowledge, may enhance or constrain deeper understanding of multiple texts.     

Behavior Therapy for Stereotypic Movement Disorder in Typically Developing Children: A Clinical Case Series

Stereotypic movement disorder (SMD) is characterized by repetitive, rhythmic, episodic movement and is associated with distress and functional impairment. A range of behavioral strategies have been implemented for the treatment of stereotypies, but research on the effectiveness of behavior therapy in typically developing children is limited. The following case series describes the implementation of behavior therapy for 3 typically developing children (ages 12 to 14) with SMD. Results showed significant reductions in the frequency and intensity of the stereotypies. Future refinement and testing of a behavior therapy protocol is recommended.     

Gender stereotypes underlie child custody decisions

Using hypothetical divorce cases we examine the role of gender stereotypes in decisions about child custody. Good mothers received greater custody allocations than did good fathers across a tightly matched pair of vignettes in three culturally distinct samples: Argentina, Brazil, and the United States (Study 1). Two follow-up studies indicated that the warmth dimension of stereotype content partly accounted for the asymmetry in custody awards: The proportion of maternal-primary custody was predicted by the tendency to ascribe warmth-related traits—such as friendliness, generosity, or trustworthiness—to mothers (Study 2) and associate them with female over male nouns (Study 3). We also found that endorsing shared custody mitigated the asymmetry in custody awards documented in our studies. Together, these results highlight the interplay of stereotyped attitudes and egalitarian commitments in the context of judicial decisions about child custody.