The Role of Temperament in Children's Reliance on Others as Sources of Information

By 3 years of age, children generally have a firm understanding of others' reliability, but there is considerable variation among individual children. Little attention has been paid to factors that influence such individual differences. This study addressed this by assessing the relation between reliability understanding and temperament in children approaching their third birthday. We measured children's ability to judge a speaker's trustworthiness and to selectively learn new information from a reliable informant. Observer ratings provided assessments of children's activity, task orientation, and affect/extraversion. Significant associations between selective trust and the temperament dimension of affect/extraversion were found, along with associations between selective trust and gender and language ability. This indicates that the ability to ascertain whether a speaker is a reliable person from whom to learn is related to several individual child characteristics. Copyright © 2014 John Wiley & Sons, Ltd.     

An Investigation of Interrater Reliability for the Rorschach Performance Assessment System (R–PAS) in a Nonpatient U.S. Sample

The Rorschach Performance Assessment System (R–PAS) aims to provide an evidence-based approach to administration, coding, and interpretation of the Rorschach Inkblot Method (RIM). R–PAS analyzes individualized communications given by respondents to each card to code a wide pool of possible variables. Due to the large number of possible codes that can be assigned to these responses, it is important to consider the concordance rates among different assessors. This study investigated interrater reliability for R–PAS protocols. Data were analyzed from a nonpatient convenience sample of 50 participants who were recruited through networking, local marketing, and advertising efforts from January 2013 through October 2014. Blind recoding was used and discrepancies between the initial and blind coders' ratings were analyzed for each variable with SPSS yielding percent agreement and intraclass correlation values. Data for Location, Space, Contents, Synthesis, Vague, Pairs, Form Quality, Populars, Determinants, and Cognitive and Thematic codes are presented. Rates of agreement for 1,168 responses were higher for more simplistic coding (e.g., Location), whereas agreement was lower for more complex codes (e.g., Cognitive and Thematic codes). Overall, concordance rates achieved good to excellent agreement. Results suggest R–PAS is an effective method with high interrater reliability supporting its empirical basis.     

Using a Behavioral Treatment Package for Sleep Problems in Children With Autism Spectrum Disorders

This study investigated the effectiveness of a behavioral treatment package for sleep problems in children diagnosed with Autism Spectrum Disorders. Treatment consisted of four behaviorally based components: circadian rhythm management, positive bedtime routines, white noise, and graduated extinction. A multiple-baseline design across three participants was used. Families completed a baseline of various lengths followed by 1 month of intervention. Results indicated the treatment package was effective in decreasing sleep onset latency and the frequency of night awakenings. A week of follow-up data showed continued improvement. Parents reported their children slept better and satisfaction with the four intervention components.     

Changes in Sensation Seeking and Need for Structure Before and After a Combat Deployment

In this study, soldiers' adaptation with the situational demands on combat deployment is explored. Certain changes on the level of two needs-based personality characteristics, Sensation Seeking (SS) and Need for Structure (NS) take place across deployment: soldiers who are lower in SS were more inclined to seek for sensations after deployment, and soldiers at the extremes of the NS dimension, modified their behavioral tendencies after deployment towards a moderate level. According to our findings, these changes suggest at least temporal characteristic adaptations with certain environmental demands. We discuss the implications of these findings for research and practice.     

Stem Tones Pre-activate Suffixes in the Brain

Results from the present event-related potentials (ERP) study show that tones on Swedish word stems can rapidly pre-activate upcoming suffixes, even when the word stem does not carry any lexical meaning. Results also show that listeners are able to rapidly restore suffixes which are replaced with a cough. Accuracy in restoring suffixes correlated positively with the amplitude of an anterior negative ERP elicited by stem tones. This effect is proposed to reflect suffix pre-activation. Suffixes that were cued by an incorrect tone elicited a left-anterior negativity and a P600, suggesting that the correct processing of the suffix is crucially tied to the activation of the preceding validly associated tone.     

A multistream model of visual word recognition

Four experiments are reported that test a multistream model of visual word recognition, which associates letter-level and word-level processing channels with three known visual processing streams isolated in macaque monkeys: the magno-dominated (MD) stream, the interblob-dominated (ID) stream, and the blob-dominated (BD) stream (Van Essen & Anderson, 1995). We show that mixing the color of adjacent letters of words does not result in facilitation of response times or error rates when the spatial-frequency pattern of a whole word is familiar. However, facilitation does occur when the spatial-frequency pattern of a whole word is not familiar. This pattern of results is not due to different luminance levels across the different-colored stimuli and the background because isoluminant displays were used. Also, the mixed-case, mixed-hue facilitation occurred when different display distances were used (Experiments 2 and 3), so this suggests that image normalization can adjust independently of object size differences. Finally, we show that this effect persists in both spaced and unspaced conditions (Experiment 4)—suggesting that inappropriate letter grouping by hue cannot account for these results. These data support a model of visual word recognition in which lower spatial frequencies are processed first in the more rapid MD stream. The slower ID and BD streams may process some lower spatial frequency information in addition to processing higher spatial frequency information, but these channels tend to lose the processing race to recognition unless the letter string is unfamiliar to the MD stream—as with mixed-case presentation.