Pathways from Birth Weight to ADHD Symptoms through Fluid Reasoning in Youth with or without Intellectual Disability

Although individual differences in fluid reasoning reliably mediate predictions of attention-deficit/hyperactivity disorder (ADHD) symptoms from birth weight in youth with typical cognitive development (TD), it is unknown if this indirect effect operates similarly in the development of ADHD symptoms secondary to intellectual disability (ID). Thus, we evaluated mediation by fluid reasoning in a longitudinal sample of 163 youth (45% female) with (n = 52) or without (n = 111) ID who were followed prospectively from age 5 to age 13. At age 9, youth completed the Arithmetic subtest of the Wechsler Intelligence Scale for Children, a measure of fluid reasoning. At ages 9 and 13, mothers and teachers separately rated youth ADHD symptoms and mothers completed a diagnostic interview. Mediation was tested via path analysis with bootstrapped confidence intervals, and moderated mediation estimated whether indirect effects differed between ID and TD youth or based on youth IQ. Controlling for demographic factors and age 9 ADHD symptoms, age 9 Arithmetic mediated birth weight and multi-method/informant age 13 ADHD symptoms, such that birth weight positively predicted Arithmetic, which negatively predicted ADHD symptoms. Neither ID status nor IQ moderated the observed indirect effect through Arithmetic, suggesting that it was similar for ID and TD youth as well as across the range of youth IQs. These findings support previous evidence that fluid reasoning, as measured by Arithmetic, may causally mediate birth weight and ADHD symptoms, and suggest that this pathway operates similarly with respect to the development of ADHD symptoms in youth with ID.     

Multisensory information boosts numerical matching abilities in young children

This study presents the first evidence that preschool children perform more accurately in a numerical matching task when given multisensory rather than unisensory information about number. Three- to 5-year-old children learned to play a numerical matching game on a touchscreen computer, which asked them to match a sample numerosity with a numerically equivalent choice numerosity. Samples consisted of a series of visual squares on some trials, a series of auditory tones on other trials, and synchronized squares and tones on still other trials. Children performed at chance on this matching task when provided with either type of unisensory sample, but improved significantly when provided with multisensory samples. There was no speed–accuracy tradeoff between unisensory and multisensory trial types. Thus, these findings suggest that intersensory redundancy may improve young children’s abilities to match numerosities.     

The face of an angel: Effect of exposure to details of moral behavior on facial recognition memory

The Dangerous Decisions Theory (DDT; Porter & ten Brinke, 2009) posits that instantaneous perceptions of trustworthiness based on a stranger's face influence the manner in which ensuing information about the target is processed. This study tested a bi-directional DDT model, proposing that information concerning a target's moral behavior could distort eyewitness memory for the individual's facial trustworthiness. Participants (N = 141) viewed a target individual's face (previously rated as appearing “neutral” on trustworthiness) and then were exposed to one of the three vignettes describing the target's behavior (either immoral, morally neutral, or altruistic). Following a delay, observers were asked to identify the target individual on a facial morph video (continuously ranging in levels of perceived trustworthiness). Results indicated that behavioral information varying in morality influenced facial recognition memory; specifically, faces were recalled as having less trustworthy features following a disclosure of immoral/criminal behavior.     

Stimulus modality and verbal learning performance in normal aging

The present study investigated the effects of modality presentation on the verbal learning performance of 26 older adults and 26 younger cohorts. A multitrial free-recall paradigm was implemented incorporating three modalities: Auditory, Visual, and simultaneous Auditory plus Visual. Older subjects learned fewer words than younger subjects but their rate of learning was similar to that of the younger group. The visual presentation of objects (with or without the simultaneous auditory presentation of names) resulted in better learning, recall, and retrieval of information than the auditory presentation alone.     

Intrinsic,extrinsic, and amotivational orientations: Their role in university adjustment,stress, well-being,and subsequent academic performance

The aim of this study was two-fold; first, to examine the relationship between motivational orientations and adjustment to university, stress, and well-being in a sample of students during their second year of university and second, to assess the predictive value of motivational orientations in determining subsequent academic performance. Controlling for gender and age, amotivated behaviors led to worse psychosocial adjustment to university, higher levels of perceived stress, and greater psychological distress while studying. In contrast, intrinsically motivated behaviors (to know) were associated with lower levels of stress. In relation to academic performance, neither extrinsic or intrinsic motivation, nor amotivation were related to subsequent academic achievement. Both gender and entry qualifications were significant predictors of performance; women and those individuals with greater academic aptitude prior to entering university had higher marks. These results are discussed with reference to Deci and Ryan’s (1985, 1991) self-determination theory.     

An Absolutist Theory of Faultless Disagreement in Aesthetics

Some philosophers writing on the possibility of faultless disagreement have argued that the only way to account for the intuition that there could be disagreements which are faultless in every sense is to accept a relativistic semantics. In this article we demonstrate that this view is mistaken by constructing an absolutist semantics for a particular domain – aesthetic discourse – which allows for the possibility of genuinely faultless disagreements. We argue that this position (Humean absolutism) is an improvement over previous absolutist responses to the relativist's challenge and that it presents an independently plausible account of the semantics of aesthetic discourse.     

The measure of a nation: The USDA and the rise of survey methodology

Survey research has played a major role in American social science. An outgrowth of efforts by the United States Department of Agriculture in the 1930s, the Division of Program Surveys (DPS) played an important role in the development of survey methodology. The DPS was headed by the ambitious and entrepreneurial Rensis Likert, populated by young and talented social scientists getting their first practical experience, and fed by the needs of the US government fighting World War II. The DPS innovations included open-ended interviewing and area probability sampling methodology as illustrated in the War Bond studies and the Master Sample of Agriculture. This paper examines the creation of the DPS, its work, and its legacy.     

Effect of preconditioning unconditioned stimulus experience on learned taste aversions.

One taste-aversion study using male Long-Evans rats in which ethanol was the unconditioned stimulus (UCS) and six studies in which lithium chloride (LiCl) was the UCS demonstrate that (a) exposure to the UCS prior to conditioning retards subsequent acquisition of learned taste aversions; (b) a single preconditioning UCS exposure is sufficient to attenuate conditioning; (c) the preconditioning UCS exposure must occur within a limited period prior to conditioning to attenuate learning; (d) repeated conditioning trials will override the effect of prior exposure to the UCS; (e) tolerance to the UCS is not a necessary condition for the attenuation effect to occur; (f) pairing the preconditioning UCS with a novel flavor other than the CS does not remove the preexposure effect, although it may reduce its magnitude; and (g) the degree of disruption is a positive function of preconditioning UCS dosage and an inverse function of conditioning UCS dosage.     

Emotional Processing Therapy for post traumatic stress disorder

While prolonged exposure is considered one of the “gold standard” and recommended treatments for post traumatic stress disorder (PTSD), it has been poorly utilised in clinical practice. Individuals with PTSD often find it too distressing to confront memories, and therapists may be uncomfortable using the therapy. A new Emotional Processing Therapy is described in which an emotional approach to prolonged exposure provides individuals with a new insight into how trauma is processed. A conceptual analysis of exposure suggests that it is exposure to distressing emotional experiences which is a key element. Viewing it as an emotion-based therapy, allows the creative addition of new emotional elements. Through exploring the individual’s emotional processing style, previously learned and unhelpful patterns can be addressed, and the addition of an “emotional preparation” phase helps them understand why it is important to face emotionally distressing memories before exposure sessions begin. Emotional Processing Therapy is intuitive and makes sense to those affected by PTSD. It is framed in an emotional context and is presented as part of a lifestyle change that may reduce the likelihood of psychological problems developing in the future.