Early Effect of Phonological Information in Korean Visual Word Recognition: An ERP Investigation with Transposed Letters

The purpose of this study was to examine the role of phonological information on visual word recognition by using letter transposition effects. The Korean writing system gives a unique opportunity to investigate such phenomenon since the transposition of the beginning consonant (onset) and the end consonant (coda) of a certain syllable allows one to keep the coda phonology constant while changing the written alphabetic characters. In this study, 23 participants’ ERPs to such transposition cases were compared with the ERPs to cases that do not maintain coda phonology while the participants were performing a go/no-go lexical decision task for visually presented letter strings. The results of the current study showed that transposed materials with original phonological information produce less N250 than both the baseline condition and the transposed materials with different phonological information condition. The results suggest that phonological information is used early in the lexical process in Korean and early orthographic processing is influenced by the characteristics of the grapheme to phoneme conversion process.     

Human motor transfer is determined by the scaling of size and accuracy of movement

A transfer of training design was used to examine the role of the Index of Difficulty (ID) on transfer of learning in a sequential Fitts's law task. Specifically, the role of the ratio between the accuracy and size of movement (ID) in transfer was examined. Transfer of skilled movement is better when both the size and accuracy of movement are changed by the same factor (ID is constant) than when only size or accuracy is changed. The authors infer that the size-accuracy ratio is capturing the control strategies employed during practice and thus promotes efficient transfer. Furthermore, efficient transfer is not dependent on maintaining relative timing invariance and thus the authors provide further evidence that relative timing is not an essential feature of movement control.     

Differences in brain information transmission between gifted and normal children during scientific hypothesis generation

The purpose of the present study was to investigate differences in neural information transmission between gifted and normal children involved in scientific hypothesis generation. To investigate changes in the amount of information transmission, the children's averaged-cross mutual information (A-CMI) of EEGs was estimated during their generation of scientific hypotheses. We recorded EEG from 25 gifted and 25 age-matched normal children using 16 electrodes on each subject's scalp. To generate hypotheses, the children were asked to observe 20 "quail eggs" that gave rise to questions. After observation, they were asked to generate a scientific hypothesis--a tentative causal explanation for the questions evoked. The results of this study revealed several distinguishing brain activities between gifted and normal children during hypothesis generation. In contrast to normal children, gifted children showed increased A-CMI values between the left temporal and central, between the left temporal and parietal, and between the left central and parietal locations while generating a hypothesis. These results suggested that gifted children more efficiently distribute the cognitive resources essential to cope with hypothesis generation.     

Hope, defense mechanisms, and adjustment: implications for false hope and defensive hopelessness

Two studies replicated and expanded an earlier finding that defense style plays a crucial role in the relation between hope and dysphoria (Kwon, 2000). Lower hope and higher defense style immaturity were each associated with greater dysphoria, depression proneness, and maladjustment. Individuals with low hope and low defense immaturity did not have poor outcomes, supporting the existence of a subtype of low hope (defensive hopelessness) that may have adaptive value. The combination of high hope and high defense immaturity was not associated with maladaptive outcomes, arguing against the false hope construct. Additionally, the findings remained after controlling for levels of anxiety. Thus, it appears that the results are not attributable to general distress or negative affectivity. Finally, domain-specific hope was shown to correlate most strongly with matching areas of adjustment, providing evidence for the validity of the construct.     

Two different types of obsession: autogenous obsessions and reactive obsessions

We propose that obsessions are categorized into two subtypes, i.e. autogenous obsessions and reactive obsessions, which are different in terms of identifiability of their evoking stimuli, subjective experiences, contents, and subsequent cognitive processes. Autogenous obsessions tend to come abruptly into consciousness without identifiable evoking stimuli, which are perceived as ego-dystonic and aversive enough to be repelled, and include sexual, aggressive, and immoral thoughts or impulses. On the other hand, reactive obsessions are evoked by identifiable external stimuli, which are perceived as relatively realistic and rational enough to do something toward the stimuli, and include thoughts about contamination, mistake, accident, asymmetry, loss, etc. Through three empirical studies, we confirmed the differences between the two types of obsessional intrusion in their frequency, subjective experiences, subsequent appraisal and control strategy. In particular, autogenous obsessions led to high appraisal on 'control over thought' and 'importance of thought' and frequent use of 'avoidant control strategies', while reactive obsessions linked with high appraisal on 'responsibility' and frequent use of 'confrontational control strategies'. These findings are expected to provide a basis for classifying and explaining the heterogeneous phenomena of obsessive-compulsive disorder.     

Family Members as Boundary Managers: Behaviors that Promote and Limit Service Members’ Involvement in Daily Family Life

When military service members deploy, they move outside the immediate boundary of their families. However, because boundaries are permeable, service members remain a psychological part of their families in spite of their physical absence. The extent of service members’ continued involvement in daily family life is likely tied to their non-deployed family members’ actions to manage this boundary. In the current study, we were interested in identifying non-deployed family members’ actions to either promote, or limit, service members’ involvement in daily family life during deployment. These actions by family members constitute boundary management behaviors. We collected qualitative data from a sample of Army reservists (N = 13) and their household family members (N = 15). Findings indicated that family members used a variety of boundary management behaviors during deployment, some of which promoted reservists’ involvement, and others which limited it. In addition, boundary management behaviors varied by who they targeted, their intentionality, and their implications for reservists’ well-being. Findings illustrate the value in equipping military families with language that enables them to communicate openly about the significance of their boundary management behavior over the course of deployment so that they may arrive at a balance between stretching and restricting boundaries that best suits their unique needs.     

Development of a magnetic-resonance-compatible photoplethysmograph amplifier for behavioral and emotional studies

The purpose of the present study was to develop a magnetic resonance (MR) compatible photoplethysmograph (PPG) system that can measure the raw PPG signal during MR image acquisition. The system consists of an optic sensor that measures the optic signal, an optic cable that transmits a near-infrared optic signal, a signal amplifier, and a filter for noise removal. To minimize interactive noise, only the optic cable and the optic sensor module are located inside the MR room; the signal amplifier and filter are located outside the MR room. An experiment verified that a reliable PPG signal can be obtained without causing a deterioration in the MR image.     

Developmental Reversals in Report Conformity: Psycho‐Legal Implications

Young children, young adults, and older adults witnessed a scene in groups of four same‐aged acquaintances. Unbeknownst to the group, a technology allowed the scene to appear differently to one member (minority) than to the others (majority), which obviated the need to rehearse confederates or to artificially provide misinformation for the report conformity effect. After viewing, participants had public recollections, and 3 days later, their cued memory and confidence (for adults) were tested privately. Majority members' reports influenced the minority members' but only for adults, not for children (17% conformity compared with 35% for adults), thus providing evidence of developmental reversals in memory reports of verbatim details. Answer changes between the sessions were dramatically higher for minority participants at all three ages (6.7 vs. 66.7% for children, 10 vs. 50% for younger adults, and 26.7 vs. 63.3% for older adults). We discuss the implications of these findings for questioning cowitnesses.Copyright © 2017 John Wiley & Sons, Ltd.