Hypermnesia for pictures: Incremental memory for pictures but not words in multiple recall trials

Two studies are reported on multiple forced recall following a single visual presentation of a sequence of pictures or words. In both experiments, a hypermnesic memory function (in which performance improved with repeated recall) was obtained for pictures, while a flat, nonincremental function was obtained for words. Interpolation of intervals of thinking between recall trials further enhanced hypermnesia for pictorial items. Retrieval, whether overt (recall trials) or covert (thinking), apparently produces increased net recovery of pictures but not words.     

Are the fruits of research available to all? The effects of sex and academic rank on reprint-sending behavior

There is considerable evidence in the psychological literature that perceived status often has a major effect on behavior. The primary purpose of the present study was to examine the effects of two status variables in an academic setting by monitoring reprint-sending behavior. Reprints were requested from 1,200 authors of psychological articles by men and women of varying academic rank. Neither sex nor academic rank of requester had any significant effect on the total number of responses returned. However, male requesters received responses significantly faster than did female requesters. In addition, subsequent analyses indicated that reprint requests were more likely to be honored by male authors than by female authors.     

Ethical Care for Vulnerable Populations Receiving Psychotropic Treatment

The increasing use of pharmacotherapy raises specific ethical concerns for psychologists working with vulnerable populations. Due to a shortage of trained specialists, professionals without training in mental health, such as primary care providers, are increasingly prescribing and monitoring psychotropic medications. Vulnerable populations (e.g., older adults, people currently low in social status, immigrants, and racial/ethnic minorities) face additional barriers to mental health treatment and are at heightened risk when these factors intersect. Hence, these patients experience unique barriers to receiving optimal psychopharmacological care and are differentially vulnerable to deleterious outcomes associated with misdiagnosis and overmedication. Taken together, these factors fuel inequities in the access, quality, and utilization of mental health care. Psychologists working with these patients are ethically mandated to protect patients from harm and ensure equitable care across patient populations. Specifically, psychologists must respond to the dilemma of how to effectively treat patients within these vulnerable populations who have been misdiagnosed or poorly medicated while remaining within the bounds of their competence. This article recommends pathways to address these dilemmas through education, training, research, and advocacy.     

Grammatical aspect,lexical aspect,and event duration constrain the availability of events in narratives

The present study investigates how readers’ representations of narratives are constrained by three sources of temporal information; grammatical aspect, lexical aspect, and the duration of intervening events. Participants read short stories in which a target event with an intrinsic endpoint or not (lexical aspect: accomplishments/activities) was described as ongoing or completed (grammatical aspect: imperfective/perfective). An intervening sentence described either a long or short duration event before the target situation was reintroduced later in the story. The electroencephalogram time-locked to the reintroduction of the target event elicited a larger N400 for perfective versus imperfective accomplishments, and this effect occurred only after short intervening events. Alternatively, the N400 to targets in the activity condition did not vary as a function of grammatical aspect or duration of intervening events. These results provide novel insight into how the temporal properties of events interact to constrain the availability of concepts in situation models.     

Adrenal medulla graft induced recovery of function in an animal model of Parkinson's disease: possible mechanisms of action

Following unilateral dopamine (DA) denervation of the striatum in animals, there is an asymmetry in the striatal DA system. Animals with such denervations will rotate vigorously when given dopaminergic drugs. Adrenal medulla grafts placed in the lateral ventricle adjacent to a DA-denervated striatum decrease rotational behaviour induced by DA receptor agonists or DA-releasing agents. This discussion reviews research on the use of adrenal medulla grafts to reverse behavioural deficits following DA-denervation of the striatum. Results from basic animal research and from the application of the procedure to patients with Parkinson's disease suggests that at least three different fundamental processes may mediate the functional effects of adrenal medulla grafts: (a) Adrenal medulla grafts may induce changes in the blood-brain barrier; (b) adrenal medulla grafts may induce an increase in serum DA; and (c) adrenal medulla grafts may have a trophic effect on the host brain. Hypotheses are proposed to explain the behavioural effects of adrenal medulla grafts in light of the processes that are thought to mediate their effects.     

Balanced incomplete blocks to control individual differences

Balanced incomplete block designs are used when there are reasons that preclude the use of repeated measurements designs, particularly when there are at least two factors, each with several levels. However, these designs are usually not used when interaction effects are of interest, because they involve the confounding of the interactions with subject or group differences. This paper describes special computational procedures that can be employed to obtain partial, but unconfounded, information about interaction effects.     

Depressive thinking and depression: relations with personality and social resources

The mechanisms by which social supports and personality variables may buffer against psychopathology are not well understood. We studied depression, depressive cognitions, social supports, and self-esteem in a sample of 68 spouse-caregivers of patients with Alzheimer's Disease in an attempt to identify possible buffering mechanisms of the latter two variables. Specifically, we hypothesized that the well-known relation of depressive cognitions to depression would vary as a function of satisfaction with social supports and with level of self-esteem. Hierarchical multiple regression analyses conducted to predict depression revealed significant and independent main effects for depressive cognitions (p less than .01), social supports (p less than .025), and self-esteem (p less than .001), with depressive cognitions associated with higher depression and the other two variables associated with reduced depression (R2 = .53 for the three main effects). In addition, the relation of depressive cognitions with depression varied substantially depending on the level of social supports (p less than .01); caregivers with high levels of depressive cognitions had high levels of depression only if social supports were low (R2 = .61 including interaction). Self-esteem and depressive cognitions showed a similar interaction, but it failed to reach significance. Analyses to determine whether self-esteem and social supports were directly associated with lower depressive cognitive activity yielded a main effect for self-esteem only (p less than .03). Thus, whereas social supports and self-esteem were directly associated with lower depression, only the social supports variable was further associated with reduced depression because it apparently buffered the impact of depressive thinking. Self-esteem was also indirectly associated with lower depression via its relation with lower depressive thinking. Implications of our results for cognitive theories of depression and for the psychosocial mechanisms of stress buffering are discussed.     

Possibilities and limits of rehabilitation in a young girl with total (global) aphasia

In the case discussed, the faculties retained and lost are described, and the aims and tasks of rehabilitation set out. The mode of procedure is elucidated by means of examples, the results achieved given, and the possible basis for the effectivity of the rehabilitation measures discussed.     

6-羟基多巴胺所致旋转行为的动物模型

选用神经毒素(6-OHDA)造成动物大脑黑质纹状体的单侧性损伤,致使动物的大脑两半球机能显示不对称性。致伤后以可卡因诱发动物的旋转行为。 本实验共观察了成年的Holtzman种系雌性大白鼠43只。结果表明,有38例(88.37％)的多巴胺的耗竭率在85一100％,它们的伤情较为理想。但是,3只动物(6.98％)的多巴胺的耗竭率小于60％,2只动物(4.65％)的多巴胺的耗竭率在60—84％。 本文详细地介绍了如何制备和利用旋转仪自动记录动物的旋转行为,以及用高效液相色谱法测定大脑纹状体内多巴胺的含量。