In three experiments, participants' visual span was measured in a comparative visual search task in which they had to detect a local match or mismatch between two displays presented side by side. Experiment 1 manipulated the difficulty of the comparative visual search task by contrasting a mismatch detection task with a substantially more difficult match detection task. In Experiment 2, partici...

Participants from 5 groups with mean ages of 6, 8, 10, 22, and 72 years were tested on a series of speeded number discriminations: 1 vs. 2, 3 vs. 4, 6 vs. 7, and 8 vs. 9. The primary measure of interest--response time slope as a function of number size--decreased with age for numbers in the 1-4 range. However, a U-shaped age function emerged in the 6-9 range, with larger slopes for children and...

OBJECTIVE The hyperglycemic response to surgery may be a risk factor for cognitive dysfunction. We hypothesize that strict maintenance of normoglycemia during cardiac surgery preserves postoperative cognitive function. METHODS As part of a larger randomized, single-blind, interventional efficacy study on the effects of hyperinsulinemic glucose control in cardiac surgery (NCT00524472), consent...

Background and Objectives: Split sagittal osteotomy is a common operation that may induce inferior alveolar nerve (IAN) damage, potentially leading to sensory deficit, numbness, and pain. Investigations in Iran to evaluate the adverse effects of sagittal split osteotomy surgery are rare so questions have been raised about the success rate of operatio...

This study examined performance in the forward and backward digit span task of the Wechsler Intelligence Scale for Children–Fourth Edition (WISC-IV) in a large group of children with specific learning disorder (SLD) as compared with a group of typically developing children matched for age and sex. Our results further support the hypothesis that the intellectual difficulties of children with SLD...

This paper presents an analytical model based on mean value analysis (MVA) technique for a probabilistic re-entrant line. The objective is to develop a solution method to determine the total cycle time of a Reflow Screening (RS) operation in a semiconductor assembly plant. The uniqueness of this operation is that it has to be borrowed from another department in order to perform the production s...

visual memory (1) Non-verbal 0.45 (.26) 1.73 Animal test (1) Verbal 0.43 (.23) 1.87 Arithmetic task (2) Verbal 0.65 (.16) 4.05*** Auditory digit sequence (6) Verbal 0.55 (.16) 3.46** Auditory serial addition task (1) Verbal 1.41 (.40) 3.53*** Backward digit span (14) Verbal 0.63 (.12) 5.34*** Backward letter span (1) Verbal 0.83 (.26) 3.19** California Verbal Learning Test (1) Verbal 0.18 (.16)...

The current study investigated the size and flexible control of visual span among patients with schizophrenia during visual search performance. Visual span is the region of the visual field from which one extracts information during a single eye fixation, and a larger visual span size is linked to more efficient search performance. Therefore, a reduced visual span may explain patients' impaired...