Spatial integration under contextual control in a virtual environment

The role of context was examined in the selection and integration of independently learned spatial relationships. Using a dynamic 3D virtual environment, participants learned one spatial relationship between landmarks A and B which was established in one virtual context (e.g., A is left of B) and a different spatial relationship which was established in another virtual context (e.g., A is in front of B). A spatial relationship between B and a goal was then established, using the same landmark-to-goal relationship in each context. When given A in either context at test, participants were more likely to choose a position in expectation of the goal, based on the relationship of A to B previously established in that context. Thus, context can be used to disambiguate conflicting spatial information. This research is discussed in light of Miller and Escobar's (2002) retrieval model.     

Psychometric Properties of a Persian Version of the SpREUK-P Questionnaire: An Instrument for Measuring the Importance and Frequency of Spiritual/Religious Practices in Iranian Patients with Chronic Gastrointestinal Diseases

Journal of Religion and Health - Attention to spiritual and religious issues is considered an important therapeutic method for patients with chronic disorders. This study aimed to assess the...     

Predictors of timed picture naming in Persian

In this study, we report normative data by native Persian speakers for concept familiarity, age of acquisition (AoA), imageability, image agreement, name agreement, and visual complexity, as well as values for word frequency, word length, and naming latency for 200 of the colored Snodgrass and Vanderwart (Journal of Experimental Psychology: Human Learning and Memory 6:174-215, 1980) pictures created by Rossion and Pourtois (Perception 33:217-236, 2004). Using multiple regression analysis, we found independent effects of name agreement, image agreement, word frequency, and AoA on picture naming by native Persian speakers from Iran. We concluded that the psycholinguistic properties identified in studies of picture naming in many other languages also predict timed picture naming in Persian. Normative data for the ratings and picture-naming latencies for the 200 Persian object nouns are provided as an Excel file in the Supplemental materials.     

Anomalous Monism in Carnap's Aufbau

The Logical Reconstruction of the World (Aufbau) is oneof the major works of Rudolf Carnap in which he attempts to putan end to some of the traditional disputes in epistemologyby using what he calls `construction theory'. According tothis theory, one or more constructional systems can be designedin which all the scientific and pre-scientific objects are logicallymade out of a limited number of basic elements. Carnap introducessome options for the basis of this system and chooses thedomain of the autopsychological, i.e., the domain of privateelementary experiences, among them and tries to construct all theconcepts out of them. This phenomenalistic reduction sometimes isseen as embracing a Cartesian dualism of mind and body or even amentalistic monism. However, in this paper, I shall try to showthat the traditional dualist-monist debates are among those disputesthat the construction theory aims to get rid of. I will show thatCarnap's position on the mind-body problem is really close towhat Davidson later termed as `Anomalous Monism' and that thisis why Carnap fails to complete his logical construction at a crucial step. Whenever possible, logicalconstructions are to be substituted forinferred entities. Bertrand Russell     

A Comparative Study of Shifting Ability,Inhibitory Control and Working Memory in Monolingual and Bilingual Children

It is now well documented that the linguistic development of bilingual children is, in many respects, different from that of their monolingual peers. Yet, there is substantial evidence in cognitive psychology that the effect of bilingualism is not merely restricted to the linguistic competence of individuals. Recent literature on bilingualism suggests that certain aspects of children’s cognitive development can be positively affected by the bilingual experience. The aim of the present study was to investigate the potential effects of bilingual experience on young children’s executive processing. A total of 67 preschool children belonging to two groups including 36 Persian–Turkish bilingual children and 31 Persian monolingual children participated in the study. They were matched for their verbal proficiency and then were compared on three executive function tasks including shifting ability, inhibitory control and working memory. Results showed that bilingual children outperformed monolinguals on both shifting and inhibitory control tasks. However, both groups performed similarly on working memory tasks. The findings are interpreted in terms of the enhanced ability of bilingual children in various executive functions processing.     

Antecedents of consumer relative preference for interpersonal information sources in pre‐purchase search

Past research has demonstrated clearly the importance of pre‐purchase information search within the buying process. Scholars have identified several sources used by consumers in order to obtain information relevant to their purchase situation. Among the various information sources, interpersonal non‐commercial sources seem to play an important role in consumers' choice decisions. The present study examines potential antecedents of consumer relative preference for interpersonal information search. The proposed antecedents include personality traits such as individuals' susceptibility to interpersonal influence, their need for cognition and their self‐confidence, as well as individual differences in product knowledge and perceived risk associated with the purchase of a specific product. Using structural equation modelling on survey data (419 respondents), seven hypotheses — describing relationships between the diverse variables of the model — were tested. The results indicate that consumer relative preference for interpersonal information search was significantly influenced by consumers' susceptibility to interpersonal influence, their need for cognition, their self‐confidence and their product knowledge. Consumers' product knowledge also influenced their perceived risk, which did not affect their preference for interpersonal search significantly. Copyright © 2005 John Wiley & Sons, Ltd.     

Motivation Among Pre-intermediate Iranian Language Learners: From Explicit Knowledge Toward Implicit Syntactic Development

The variable success in learning a second language (L2) may be best explained by varying degrees of motivation. This study investigated whether individual differences in appraisal dimensions of motivation explained explicit and implicit syntactic knowledge. Participants learned three syntactic structures under implicit and explicit training conditions. They also completed two motivation questionnaires before instruction. Syntactic development was assessed at early and late stages of acquisition. Results indicated superior performance on the tests of explicit knowledge, but a limited effect for the role of motivation in its development. However, with improvement in implicit knowledge at delayed testing, positive relationships emerged with several motivational dimensions. The results support L2 theoretical perspectives that posit different roles for explicit and implicit knowledge at early and late stages of L2 grammar, respectively. The findings also indicate that variation in learners’ patterns of stimulus appraisals may contribute to variable success in the development of implicit knowledge.     

A new variable interval schedule with constant hazard rate and finite time range

We propose a new variable interval (VI) schedule that achieves constant probability of reinforcement in time while using a bounded range of intervals. By sampling each trial duration from a uniform distribution ranging from 0 to 2 T seconds, and then applying a reinforcement rule that depends linearly on trial duration, the schedule alternates reinforced and unreinforced trials, each less than 2 T seconds, while preserving a constant hazard function.     

Age and Gender Differences in the Use of Various Poisoning Methods for Deliberate Parasuicide Cases Admitted to Loghman Hospital in Tehran (2000–2004)

Different methods of poisoning used by individuals with the diagnosis of parasuicide admitted to the Loghman Hospital, Tehran, from 2000 to 2004 were investigated, with particular focus on gender and age differences. Drugs, pesticides, and other agricultural chemicals (women: 12.7%, men: 9%) were the most commonly used methods. In males, the percentage of use of drugs increased with age, but the frequency of pesticides use decreased with age. In females, drugs were most often used in the youngest age group, whereas the use of pesticides was lowest in the youngest age category. Females outnumbered males, especially in the youngest age group of 10 to 19 years olds. Drugs and pesticides were the substances used most often for parasuicide in each age group regardless of gender.     

Dreaming without REM sleep

To test whether mental activities collected from non-REM sleep are influenced by REM sleep, we suppressed REM sleep using clomipramine 50mg (an antidepressant) or placebo in the evening, in a double blind cross-over design, in 11 healthy young men. Subjects were awakened every hour and asked about their mental activity. The marked (81%, range 39-98%) REM-sleep suppression induced by clomipramine did not substantially affect any aspects of dream recall (report length, complexity, bizarreness, pleasantness and self-perception of dream or thought-like mentation). Since long, complex and bizarre dreams persist even after suppressing REM sleep either partially or totally, it suggests that the generation of mental activity during sleep is independent of sleep stage.