Immediate and long-term retention of basic-level categories in 24-month-olds

This study assessed the effect of presenting single versus multiple exemplars of basic-level categories on 24-month-olds' long-term memory for categorical information. Sixty-four infants were tested in a paired-comparison recognition memory paradigm immediately and one week after familiarization with basic-level categories. Infants were randomly assigned to one of two familiarization conditions and one of two test conditions. In one familiarization condition (Varied Exemplar), they briefly viewed four different exemplars of each of 16 basic-level categories. In the other familiarization condition (Single Exemplar), they viewed only one instance of each category on four different trials. Test trials consisted of either an exemplar seen during familiarization (Familiar-Exemplar Test) or novel intracategory exemplar (Unfamiliar-Exemplar Test) paired with a stimulus from a novel category. Both immediately following familiarization and one week later, infants looked longer at test stimuli from the novel category irrespective of familiarization or test condition.     

A technique for converting from intravenous drug self-administration to liquid reinforcement

A rapid inexpensive technique for changing from intravenous drug self-administration (DSA) to liquid reinforcement is described. Utilizing a standard peristaltic-type infusion pump typically used in DSA experiments and a specially designed drinking cup, the changeover from intravenous DSA to liquid reinforcement can be accomplished in a few minutes at a cost of less than $10.     

Construction of new scales for the Multiple Affect Adjective Check List

Factor analyses were used to develop new scales for the Multiple Affect Adjective Check List (MAACL) measuring anxiety, depression, hostility, positive, and sensation-seeking affects. Anxiety, depression, and hostility scales were moderately intercorrelated and a combined score called “dysphoria” was formed from their addition. Positive and sensation-seeking affects were also correlated and combined in a summary score (PASS). The dysphoric and PASS scores were not highly correlated. The number of items checked correlated highly with the positive affect scale, moderately with sensation seeking, and relatively low with the negative affect scales. Internal reliabilities were high and retest reliabilities were low, in conformance with the model for state scales. The anxiety score increased and the positive affect score and number of items checked decreased just prior to a classroom examination. Further plans for scale development are discussed.     

Developing coordination of services between a mental health center and a public school system

A child-and-family oriented community mental health center of necessity is concerned with the manner in which the school system in its community is providing for the psychological, social, and emotional development of children. Fortunately, over the last decade, the number of school systems that are aware of their responsibility in this regard has greatly increased, and many affluent and enlightened school systems have moved to develop extensive pupil personnel services, functioning in many ways as in-house mental health programs. Where there are mental health providers both within the community and within the school system, however, problems may develop such as professional competition, overlapping functions, and differences with regard to how mental health problems are best dealt with. This paper will examine the relationship of a town-supported mental health program and the town's public school system. Highlighted will be the variety of problems which develop, including those mentioned above, and strategies adopted to resolve the problems.     

Mothers' resolution of their children's diagnosis: Organized patterns of caregiving representations

In this paper we examine mothers' representations of one form of trauma to the caregiving system: the experience of receiving a diagnosis of a chronic illness or disability in their child. An interview and classification system was used with 91 mothers of children ages 15–50 months with cerebral palsy or epilepsy. Mothers were classified as Resolved or Unresolved with respect to their child's diagnosis and grouped into subcategories within these major groups. Roughly half of these mothers were classified as Unresolved with respect to their child's diagnosis. Diagnosis type, severity of condition, developmental age, and time since receiving diagnosis were all unrelated to the distribution of Resolved/Unresolved classifications. Patterns of resolution in which cognitive strategies predominated were the most frequent form within the Resolved classification. Findings provide support for the organizational nature of caregiving representations as well as a number of implications for clinical practice.     

Delayed attentional engagement in the attentional blink

Observers often miss the 2nd of 2 visual targets (first target [T1] and second target [T2]) when these targets are presented closely in time; the attentional blink (AB). The authors hypothesized that the AB occurs because the attentional response to T2 is delayed by T1 processing, causing T2 to lose a competition for attention to the item that follows it. The authors investigated this hypothesis by determining whether the AB is attenuated when T2 is precued. The results from 4 experiments showed that the duration and magnitude of the AB were substantially reduced when T2 was precued. The observed improvement in T2 report did not occur at the expense of T1 report, suggesting that processing of T1 was already completed or was at least protected when the cue was presented. The authors conclude that, during the AB, there is a delay between detection and the selection of target candidates for consolidation in short-term memory.