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201.
Bilateral mirror symmetry, especially vertical symmetry, is a powerful phenomenon in spatial organization of visual shapes. However, the causes of vertical symmetry salience in visual perception are not completely clear. Here we investigated whether the perceptual salience of vertical symmetry depends on visual experience by testing a group of congenitally blind individuals in a memory task in which either horizontal or vertical symmetry was used as an incidental feature. Both blind and sighted subjects remembered more accurately configurations that were symmetrical compared to those that were not. Critically, whereas sighted subjects displayed a higher level of facilitation by vertical than horizontal symmetry, no such difference was found in the blind. This suggests that the perceptual salience of the vertical dimension is visually based. 相似文献
202.
Chris Stewart Ph.D. Ada C. Mezzich Ph.D. Bang-Shiuh Day M.I.S. 《Journal of child and family studies》2006,15(5):542-553
We aimed at determining the association of both severity of paternal and maternal substance use disorder (SUD) and psychiatric disorders with paternal child neglect severity during late childhood. The sample comprised 146 intact SUD (n=71) and non SUD (n=75) families with a 10–12 year old female or male biological offspring. The average age of fathers, mothers, and children was 44 (SD=5.9), 42 (SD=4.78), and 11 (SD=.79) years, respectively. The ethnic composition was 85% Caucasian and 15% African American. The results showed that paternal and maternal SUD and psychiatric disorders severity was correlated with paternal child neglect severity. However, paternal psychopathology failed to achieve significance in the regression analyses. Severity of maternal, especially severity of antisocial personality disorder symptoms was associated with paternal child neglect. These results are discussed within the framework of evolutionary psychology research examining paternal investment in the offspring. Implications for the necessity of identifying parental psychopathology and an integrated treatment approach are discussed. 相似文献
203.
Low levels of parental satisfaction have been implicated in parents' utilization of harsh disciplining strategies and perpetration of child abuse and neglect. Although measures of parental satisfaction have been present for more than 3 decades, the employment of these instruments in child maltreatment populations has been limited, perhaps due to a lack of empirical evaluation. This paper reviews extant studies that demonstrate the need to examine the relationship between parental satisfaction and child maltreatment, and provides a critical examination of existing measures of parental satisfaction, including their psychometric support and application to child maltreatment. Recommendations are offered regarding the utility of these measures in child maltreatment. 相似文献
204.
Persons with multiple sclerosis (PwMS) often report problems due to sensory loss and have an inability to appropriately reweight sensory information. Both of these issues can affect individual’s ability to maintain stability when walking under challenging conditions. The purpose of the current study was to determine how gait stability is adapted when walking under challenging sensory conditions where vision and somatosensation at the feet is manipulated. 25 healthy adults and 40 PwMS (15 fallers, 25 non-fallers) walked on a treadmill at their preferred normal walking speed under 3 conditions: normal walking, altered vision using goggles that shifted visual field laterally, and altered somatosensation using shoes with compliant foam soles. Inertial measurement united recorded acceleration at the lumbar and right ankle, and acceleration variability measures were calculated including root mean square (RMS), range, sample entropy (SaEn), and Lyapunov exponents (LyE). A gait stability index (GSI) was calculated using each of the four variability measures as the ratio of lumbar acceleration variability divided by foot acceleration variability in the frontal and sagittal planes. The sagittal and frontal GSIRMS were larger in the somatosensory condition compared to the normal and visual conditions (p < 0.001). The frontal GSISaEn was greater in the visual condition compared to the somatosensory condition (p = 0.021). The frontal and sagittal GSILyE was greater in the somatosensory condition compared to the normal and visual conditions (p < 0.002). The current study showed that HC, MS non-fallers and MS fallers largely adapted to altered sensory feedback during walking in a similar manner. However, MS faller subjects may be more reliant on visual feedback compared to MS non-fallers and HC subjects. 相似文献
205.
Memories of past experiences can guide our decisions. Thus, if memories are undermined or distorted, decision making should be affected. Nevertheless, little empirical research has been done to examine the role of memory in reinforcement decision-making. We hypothesized that if memories guide choices in a conditioning decision-making task, then manipulating these memories would result in a change of decision preferences to gain reward. We manipulated participants’ memories by providing false feedback that their memory associations were wrong before they made decisions that could lead them to win money. Participants’ memory ratings decreased significantly after receiving false feedback. More importantly, we found that false feedback led participants’ decision bias to disappear after their memory associations were undermined. Our results suggest that reinforcement decision-making can be altered by false feedback on memories. The results are discussed using memory mechanisms such as spreading activation theories. 相似文献
206.
This study investigated how neighborhood conditions influence the relationship between early child maltreatment and criminal
behavior, using official data from a sample of maltreated children (N = 908) and matched controls (N = 667), as well as census data about respondents' neighborhoods. Using multilevel data that incorporated information about
individuals, families, and neighborhoods, 2 hypotheses (direct influence and interaction effect) were examined using hierarchical
generalized linear modeling (HGLM). The results indicated that neighborhood disadvantage and stability moderated the relationship
between early child maltreatment and offending. Specifically, the effect of early child maltreatment on later juvenile and
adult criminal behavior was strongest for those individuals from the most disadvantaged and most stable neighborhoods. These
results suggest that studying the interaction between family functioning and neighborhood conditions provides a more comprehensive
understanding of offending than does studying each factor separately. 相似文献
207.
Studies examining a relationship between attention deficit hyperactivity disorder (ADHD) and relative visual inattention towards left space have produced inconsistent results. Here, based on previous studies with adult neurological patients who show very severe inattention to the left, we examine whether any spatial bias in ADHD may be modulated by changes in alertness levels. In a single case, we found that inattention to the left--that was intermittently apparent--dramatically increased as a function of time-on-task. No significant changes were observed on the right. The implications for clinical assessment and research design are discussed. 相似文献
208.
The integration of spatial maps in pigeons was investigated using a spatial analog to sensory preconditioning. The pigeons were tested in an open-field arena in which they had to locate hidden food among a 4×4 grid of gravel-filled cups. In phase 1, the pigeons were exposed to a consistent spatial relationship (vector) between landmark L (a red L-shaped block of wood), landmark T (a blue T-shaped block of wood) and the hidden food goal. In phase 2, the pigeons were then exposed to landmark T with a different spatial vector to the hidden food goal. Following phase 2, pigeons were tested with trials on which they were presented with only landmark L to examine the potential integration of the phase 1 and 2 vectors via their shared common elements. When these test trials were preceded by phase 1 and phase 2 reminder trials, pigeons searched for the goal most often at a location consistent with their integration of the LT phase 1 and Tphase 2 goal vectors. This result indicates that integration of spatial vectors acquired during phases 1 and 2 allowed the pigeons to compute a novel Lgoal vector. This suggests that spatial maps may be enlarged by successively integrating additional spatial information through the linkage of common elements. 相似文献
209.
Diekema DS 《Theoretical medicine and bioethics》2004,25(4):243-264
Minors are generally considered incompetent to provide legally binding decisions regarding their health care, and parents or guardians are empowered to make those decisions on their behalf. Parental authority is not absolute, however, and when a parent acts contrary to the best interests of a child, the state may intervene. The best interests standard is the threshold most frequently employed in challenging a parent's refusal to provide consent for a child's medical care. In this paper, I will argue that the best interest standard provides insufficient guidance for decision-making regarding children and does not reflect the actual standard used by medical providers and courts. Rather, I will suggest that the Harm Principle provides a more appropriate threshold for state intervention than the Best Interest standard. Finally, I will suggest a series of criteria that can be used in deciding whether the state should intervene in a parent's decision to refuse medical care on behalf of a child. 相似文献
210.