Modulating younger and older adults’ performance in ignoring pictorial information during a word matching task

Using both behavioural and event-related potential (ERP) data, the current study sought to examine the neurophysiological underpinnings for the effect of distracting pictorial information on semantic word matching performance in younger and older adults. This was tested in the context of semantic relations between task-relevant word pairs, a task-irrelevant picture and the resultant N400 differences in ERP. Younger and older adults were shown a context word superimposed on a to-be-ignored picture, followed by a test word. Their task was to determine whether the prime and test words were semantically related. The to-be-ignored pictures were interfering (for ‘No’ trials), facilitating (for ‘Yes’ trials), or neutral (for both ‘Yes’ and ‘No’ trials) to the expected responses. The interfering and facilitatory effects of to-be-ignored pictures were assessed under more automatic and more controlled conditions by manipulating the context–test interstimulus-interval (ISI) as 50 ms and 1000 ms, respectively. The analysis of the N400 at centro-parietal sites during test word display revealed similar N400 amplitudes for the ‘No’ response trials at the two ISIs, suggesting that younger and older adults showed an equivalent effect from interfering pictures. In contrast, younger adults showed greater reductions in the N400, as compared to older adults, for ‘Yes’ trials indicating differential effects in facilitation from to-be-ignored pictorial information, but only in the long ISI condition. The data are discussed in terms of age differences in resource demanding strategy use during a semantic word matching task, specifically during controlled retrieval.     

The impact of egg incubation temperature on the personality of oviparous reptiles

Personality traits, defined as differences in the behavior of individual animals of the same species that are consistent over time and context, such as ‘boldness,’ have been shown to be both heritable and be influenced by external factors, such as predation pressure. Currently, we know very little about the role that early environmental factors have upon personality. Thus, we investigated the impact of incubation temperature upon the boldness on an oviparous reptile, the bearded dragon (Pogona vitticeps). Eggs, from one clutch, were incubated at two different average temperatures within the normal range. After hatching the lizards were raised under the same environmental conditions. Novel object and novel environment tests were used to assess personality. Each test was repeated in both the short term and the long term. The results revealed that incubation temperature did impact upon ‘boldness’ but only in the short term and suggests that, rather than influencing personality, incubation temperature may have an effect on the development of behavioral of oviparous reptiles at different stages across ontogeny.     

Person–Situation Interaction in Adaptive Emotional Functioning

Two studies applied a person–situation model to examine the effect of emotional affordances of situations. Participants rated their emotional functioning as more extensive in situations classified as being high in emotional affordance than those classified as low in emotional affordance. Participants who scored higher on the individual difference characteristic of emotional intelligence were more interested in entering high emotional affordance situations than were individuals lower in emotional intelligence, and participants who scored higher on emotional intelligence were rated by others as being more successful in high emotional affordance situations than individuals lower in emotional intelligence. These results provide preliminary evidence that the interaction between emotional intelligence and situations may influence emotional functioning.     

Impact of Tourette’s Disorder on Parent Reported Stress

We examined the relationship between Tourette’s Disorder (TD) and parent reported stress. About 84 parents of children with TD participated by completing questionnaires assessing parental stress, TD symptom severity, co-morbid disorders, services received by the child, and parents’ perception of their child’s academic ability. The results indicate that parent reported stress reached clinically significant levels when a co-morbid disorder was present, but not with a diagnosis of TD alone. Similarly, parents report higher levels of stress when they view their child as performing below other students academically. Finally, the types of services that the child receives were found to have little or no relationship to parent reported stress. Limitations of this study, directions for future research, and implications for intervention are discussed.     

How well can the theory of planned behavior account for occupational intentions?

We tested the capacity of an extended version of the theory of planned behavior (TPB) to account for intentions to work for the UK’s National Health Service (NHS) as a nurse, physiotherapist or radiographer amongst three groups: professionally unqualified (N = 507), in professional training (N = 244), and professionally qualified (N = 227). We found strong support for the three core TPB variables attitude, subjective norm and perceived behavioral control as predictors of behavioral intention, and limited support for two additional variables: moral obligation and identification. There were some differences in the relative importance of TPB variables between groups. We conclude that the TPB has utility for more complex behaviors as well as simpler ones that are more frequently researched. However, more attention should be paid to differences in people’s circumstances, particularly regarding past vocational decisions and behavior, and to obstacles to implementing an intention.     

Stimulus control applications to the treatment of worry

As an internal, self-generated event, worrisome cognitive activity can occur under a wide variety of environmental conditions. The contiguity of the activity and diverse cues would suggest that poor discriminative control is established, and, conversely, that subject-initiated restriction of the temporal and environmental cues for the occurrence of the activity may reduce its frequency during the day. Two experiments are reported wherein self-labeled worriers received either no-treatment or a 4-week trial of stimulus control instructions designed to effect such a restriction. Daily worry reports were found to decline significantly among treated subjects relative to controls.     

An assessment of the dimensionality of moos' social climate scale

A revised form of the Social Climate Scale (SCS) containing nine of the 14 subscales was given to 145 staff and 143 boys at a state training school for delinquents. A first principal factor was extracted from the item-correlation matrices for staff and boys, respectively. This factor was named Value, because of its representation of an evaluative item dimension. A factor model was used to test whether this Value factor might account for the significant subscale intercorrelations found in these samples. Maximum likelihood factor analysis of the subscale correlation matrices for both groups provided the test for this model. Through a least-squares rotation procedure on the maximum likelihood factor loadings, the Value factor was identified as the source of most of the subscale dependence. Implications for validation of the SCS and other related questionnaires by Moos are discussed.     

The use of APL in teaching multivariate data analysis

APL is recommended for introducing students in multivariate data analysis to computer applications of statistical formulas. Limitations and advantages of the language for this purpose are discussed, and examples of basic operations and statistical analyses are presented.     

Miniature reaction timer with memory

A pocket-portable instrument is described for the self administration, in the field, of simple reaction time trials with variable warning foreperiod. The device will store 100 reaction times in milliseconds for later readout in the laboratory, in addition to displaying them to the S at the time of the trial.     

Apparent movement and change in perceived location of a simulus produced by a change in accommodative vergence

Using a psychophysical method of adjustment, 175 Ss, ranging in age from 3 to 20 years, made four adjustments each of a luminous line to subjective vertical, horizontal, and 45-deg tilts in the dark. There were no significant differences in mean errors of adjustment to the vertical and horizontal over the ages tested. There were significant differences in intra-S variability of adjustment to the horizontal and vertical, with the greatest improvement occurring before age 10. Older children and adults produced significantly larger mean errors of adjustment to the 45-deg tilt than did the younger children; but the variability of settings by younger children was very high, indicating that they did not discriminate the 45-deg tilt more accurately than the older groups. The intra-S variability at all ages showed that adjustment was more accurate to the horizontal and vertical than to the 45-deg tilt.