Differing Perceptions of Mothers,Fathers, and children Concerning Children's Academic Performance

This study examined the hypothesis that mothers' views of their child's performance on an academic task are more synchronous with those of their child than are fathers' views. Parents of 30 sixth-grade children were asked to predict their child's memory spans on a recall and a recognition task given to each child. Parents and children were also asked to judge the importance for the child's performance on 10 attribution factors created for use with memory tests. In line with the hypothesis, mothers predicted the child's memory span more accurately than fathers, and the mothers' attributions were more congruent with those of their children. Mothers were also more aware than fathers of the different demands of the two memory tasks. These findings suggest that mothers may be more aware than fathers of their child's academic progress and that mothers' attitudes and expectations may be more influential in determining the child's path of development.     

Natural scene statistics mediate the perception of image complexity

Humans are sensitive to complexity and regularity in patterns (Falk & Konold, 1997; Yamada, Kawabe, & Miyazaki, 2013). The subjective perception of pattern complexity is correlated to algorithmic (or Kolmogorov-Chaitin) complexity as defined in computer science (Li & Vitányi, 2008), but also to the frequency of naturally occurring patterns (Hsu, Griffiths, & Schreiber, 2010). However, the possible mediational role of natural frequencies in the perception of algorithmic complexity remains unclear. Here we reanalyze Hsu et al. (2010) through a mediational analysis, and complement their results in a new experiment. We conclude that human perception of complexity seems partly shaped by natural scenes statistics, thereby establishing a link between the perception of complexity and the effect of natural scene statistics.     

A Longitudinal Comparison of Posttraumatic Stress Disorder and Depression Among Military Service Components

The purpose of this study was to longitudinally investigate PTSD and depression between Reserve, National Guard, and active duty continuously and dichotomously. The study consisted of Millennium Cohort Study participants and used self-reported symptoms. Repeated measures modeling assessed PTSD and depression continuously and dichotomously over time. A subanalysis among only recently deployed personnel was conducted. Of the 52,653 participants for the PTSD analysis, the adjusted PCL-C means were 34.6 for Reservists, 34.4 for National Guardsmen, and 34.7 for active duty members, respectively. Of the 53,073 participants for depression analysis, the adjusted PHQ-9 means were 6.8, 6.7, and 7.2, respectively. In dichotomous models, Reservists and National Guardsmen did not have a higher risk of PTSD or depression compared with active duty members. Among deployers, Reservists and National Guardsmen had higher odds (odds ratio = 1.16, 95% confidence limit [CL] [1.01, 1.34] and OR = 1.19, 95% CL [1.04, 1.36], respectively) of screening positive for PTSD, but not depression. Although Reserve and National Guard deployers had modestly increased odds of PTSD compared with active duty members, overall there were minimal differences in the risk and symptom scores of PTSD and depression between service components.     

The effects of venlafaxine and cognitive behavioral therapy alone and combined in the treatment of co-morbid alcohol use-anxiety disorders

The effects of the antidepressant venlafaxine (VEN-225 mg daily) and transdiagnostic cognitive behavioral treatment (CBT) alone and in combination on alcohol intake in subjects with co-morbid alcohol use disorders (AUDs) and anxiety disorders were compared. Drinking outcomes and anxiety were assessed for 81 subjects treated for 11 weeks with one of 4 conditions: 1) VEN–CBT, 2) VEN-Progressive Muscle Relaxation therapy (PMR), 3) Placebo (PLC)-CBT and 4) a comparison group of PLC-PMR. For subjects who reported taking at least one dose of study medication, the Time × Group interaction was significant for percent days of heavy drinking and drinks consumed per day. For the measure of percent days heavy drinking, the paired comparison of PLC-CBT versus PLC-PMR group indicated that the PLC-CBT group had greater drinking reductions, whereas other groups were not superior to the comparison group. In Week 11, the proportion of subjects in the PLC-CBT group that had a 50% reduction from baseline in percent days heavy drinking was significantly greater than those in the comparison group. Of the 3 “active treatment” groups only the PLC-CBT group had significantly decreased heavy drinking when contrasted to the comparison group. This finding suggests that the transdiagnostic CBT approach of Barlow and colleagues may have value in the management of heavy drinking in individuals with co-morbid alcoholism and anxiety.     

Unexpected a posteriori necessary laws of nature

In this paper I argue that it is not a priori that all the laws of nature are contingent. I assume that the fundamental laws are contingent and show that some non-trivial, a posteriori, non-basic laws may nonetheless be necessary in the sense of having no counterinstances in any possible world. I consider a law L_S (such as ‘salt dissolves in water’) that concerns a substance S. Kripke's arguments concerning constitution show that the existence of S requires that a certain deeper level law or variants thereof hold. At the same time, that law and its variants may each entail the truth of L_S. Thus the existence of S entails L_S. Consequently there is no world in which S exists and fails to obey L_S. I consider the conditions concerning the fundamental laws that would make this phenomenon ubiquitous. I conclude with some consequences for metaphysics.     

Algorithmic complexity for short binary strings applied to psychology: a primer

As human randomness production has come to be more closely studied and used to assess executive functions (especially inhibition), many normative measures for assessing the degree to which a sequence is randomlike have been suggested. However, each of these measures focuses on one feature of randomness, leading researchers to have to use multiple measures. Although algorithmic complexity has been suggested as a means for overcoming this inconvenience, it has never been used, because standard Kolmogorov complexity is inapplicable to short strings (e.g., of length l?≤?50), due to both computational and theoretical limitations. Here, we describe a novel technique (the coding theorem method) based on the calculation of a universal distribution, which yields an objective and universal measure of algorithmic complexity for short strings that approximates Kolmogorov–Chaitin complexity.     

Dynamic mechanisms of exercise to improve body satisfaction: Perceived or actual fat loss?

We examined the dynamic mechanisms of aerobic training (AT) and strength training (ST) to improve body satisfaction. Sixty-six participants were randomised to either the AT or ST condition and completed an 8-week intervention. Participants completed 3 weekly, 30-minute sessions of moderate intensity AT (65–75% VO₂max) or ST (65–75% 1-RM). The energy consumption of each session was approximately equivalent under both conditions. Body satisfaction, body composition, perceived fitness and exercise self-efficacy were measured at baseline and biweekly during the intervention. Exercise improved individuals' body satisfaction (p < .05). When the energy expenditures of AT and ST were equal, there was no difference in body satisfaction improvement. There were dynamic mechanisms underlying the effects of exercise on body satisfaction. Specifically, perceived fitness influenced body satisfaction improvements during the early stages of the exercise program, while changes in body composition influenced body satisfaction toward the end of the exercise program. There were sex differences in the mechanisms underlying body satisfaction. For women, perceived fat was more important in the early intervention period; for men, actual body fat was more valuable in the late intervention period. An effective strategy to improve body satisfaction is to initially target perceived fitness before focusing on changing body composition.