Warning! The following packet contains shocking images: The impact of mortality salience on the effectiveness of graphic cigarette warning labels

This research looks at a recent initiative to encourage smokers to quit smoking and to discourage nonsmokers from starting to smoke. Evidence has shown that text‐based warning labels are ineffective in drawing attention to the dangers of tobacco consumption; therefore, some governments are looking to draw current smokers and potential smokers away from cigarettes by displaying graphic images of various smoking ailments. This research draws on Terror Management Theory as a means of understanding the effects of graphic visual images in cigarette packaging and offers implications for public health researchers, social marketers, and antismoking campaigners to help smokers to quit and reduce the likelihood of potential smokers becoming smokers. Copyright © 2012 John Wiley & Sons, Ltd.     

跨视听通道的相继错误记忆效应

本研究以12名大学生为被试采用DRM范式,考察了视觉与听觉通道在编码阶段的错误记忆ERP效应,以从更深层面认识错误记忆的内在加工机制。研究结果表明,在编码阶段,在300-500ms及500-700ms的时间窗视觉通道均存在相继错误记忆效应（DIM）,比听觉通道表现出较强的DIM效应,这不仅说明视觉通道与听觉通道在编码阶段具有不同的脑机制,而且表明DIM效应与学习项目的语义加工有着密切的关系。     

视觉感觉记忆在字音选取作业中的作用

该研究通过四项实验探讨了视觉感觉记忆(VSM)在字音选取作业中的作用。实验材料为48个汉字。实验结果表明:当被试只能利用短时记忆(STM)中的信息进行选取作业时,能选取的汉字数与转换到STM中的汉字数之间无显著性差异;当被试可以同时利用VSM和STM中的信息时,能选取的汉字数要显著多于转换到STM中的汉字数。这表明,人能根据字音特征从VSM信息中选取字符。     

ACQUISITION OF ADJECTIVES AND ADVERBS IN SENTENCES WRITTEN BY HEARING IMPAIRED AND APHASIC CHILDREN

The effect of an instructional package, which included modeling, reinforcement, and remedial feedback on the rate, accuracy, and topography of sentences composed by four hearing impaired and aphasic children, was examined. In a specially designed classroom, students wrote sentences describing a stimulus picture on acetate sheets placed on the stage of an overhead projector which was built into each student's desk. This arrangement provided the teacher and other students immediate and continuous visual access to each student's sentences. In a multiple baseline design across behaviors, model sentences were projected and token reinforcment and remedial feedback were made contingent upon writing correct sentences containing prenominal adjectives only, then adverbs only, then prenomial adjectives plus adverbs. During baseline all students displayed poor written language skills and seldom wrote sentences containing modifiers. When the instructional package was implemented, all students demonstrated significant increases in response rate, accuracy, and percentage of correct sentences including prenominal adjectives and adverbs.     

Behavioral and neural analyses of connotative meaning: Word classes and rating scales

Behavioral (semantic differential) and neural (Evoked Potentials, EPs) responses were related to connotative meaning. The approach was based on Osgood's semantic analyses and dimensions of Evaluation (E), Potency (P), and Activity (A). The experimental variables were (1) the semantic class of the stimulus word (E+, E-, P+, P-, A+, A-) and (2) the dimension of the semantic scale (E, P, A) which the subject used to rate the stimulus words. These variables were experimentally combined such that on each trial the subject used a designated semantic scale to judge a specified stimulus word while brain activity was recorded. Using multivariate analyses, the effects on the EPs of stimulus word class, scale dimension, and their interaction were analyzed. The EP effects of stimulus word class were similar whether the subjects were merely saying the words or rating the words on a variety of semantic scales. Different EPs were found for six word classes, three semantic scale dimensions, and the 18 groups formed by their combination. The success rates in EP identification of (1) word class and (2) scale dimension did not depend on whether these two kinds of semantic variables involved the same or different semantic dimensions. The two kinds of semantic effects in EPs were largely independent. The behavioral data supported Osgood's results and showed that our subjects were appropriately processing the semantic information. The common analyses of data from all subjects suggest the universality of the connotative EP effects across individuals. This parallels, at the neural level, the universality of the connotative dimensions found at the behavioral level by semantic differential ratings. The EP effects imply that the neural representation of meaning is similar in different individuals.     

A Review of North American Selection Procedures: Canada and the United States of America

This article reviews North American selection procedures used to make employment decisions (hiring, promotion, training, layoff and demotion) within public and private organizations in Canada and the United States of America. We present the conclusions of several surveys of selection practices including those conducted by the International Personnel Management Association and the American Management Association. We summarize the literature on assessment centers, biodata, computerized assessment, education and experience criteria, individual assessment, education and experience criteria, individual assessment, integrity testing, interviews, job knowledge tests, physical and psychomotor tests and written tests. We also describe selection procedures being used for a variety of occupations from Air Traffic Controller to Telephone Operator. We conclude by describing future trends in personnel assessment in North America and predict greater collaborative research efforts between our two countries.     

Perception of shape from shading in chimpanzees (Pan troglodytes) and humans (Homo sapiens)

The perception of shape from shading was tested in two chimpanzees (Pan troglodytes) and five humans (Homo sapiens), using visual search tasks. Subjects were required to select and touch an odd item (target) from among uniform distractors. Humans found the target faster when shading was vertical than when it was horizontal, consistent with results of previous research. Both chimpanzees showed the opposite pattern: they found the target faster when shading was horizontal. The same difference in response was found in texture segregation tasks. This difference between the species could not be explained by head rotation or head shift parallel to the surface of the monitor. Furthermore, when the shaded shape was changed from a circle to a square, or the shading type was changed from gradual to stepwise, the difference in performance between vertical and horizontal shading disappeared in chimpanzees, but persisted in humans. These results suggest that chimpanzees process shading information in a different way from humans. Received: 20 January 1998 / Accepted after revision: 30 March 1998     

Semaphoring in an earless frog: the origin of a novel visual signal

Social communication in anuran amphibians (frogs and toads) is mediated predominantly by acoustic signals. Unlike most anurans, the Panamanian golden frog, Atelopus zeteki, lacks a standard tympanic middle ear and appears to have augmented its communicatory repertoire to include rotational limb motions as visual signals, referred to here as semaphores. The communicatory nature of semaphoring was inferred from experimental manipulations using mirrored self-image presentations and nonresident introductions. Male frogs semaphored significantly more when presented with a mirrored self-image than with a nonreflective control. Novel encounters between resident males and nonresident frogs demonstrated that semaphores were used directionally and were displayed toward target individuals. Females semaphored frequently and this observation represents a rare case of signaling by females in a typically male-biased communicatory regime. Semaphore actions were clearly linked to a locomotory gait pattern and appear to have originated as an elaboration of a standard stepping motion. Received: 19 March 1998 / Accepted after revision: 25 July 1998     

Estimates of shape by eye, or, The little invariant that could

Five experiments were conducted to test the hypothesis that observers apprehend specific constancies under change in perspective. The constancies were projective properties of ellipses pictured to slant and tilt in depth. Observers were asked to reproduce the static upright view of a moving pair of ellipses, using a computer graphics display and interface. Projective invariants for pairs of conics were computed on the observers’ productions. A few experimental conditions revealed near-perfect performance. When pairs of coplanar ellipses were viewed under dynamic transformation in perspective, then invariants calculated on the observers’ productions were a match – in value on average – to the invariants of the transforming ellipse pairs. It is proposed that measures of projective properties afford a family of techniques that can be applied to gauge acuity for complex shapes in the study of visual form perception.     

On the relationship between flanker interference and localized attentional interference

The flanker interference (FI) effect suggests that visual attention operates like a mental spotlight, enhancing all stimuli within a selected region. In contrast, other data suggest difficulty dividing attention between objects near one another in the visual field, an effect termed localized attentional interference (LAI). The present experiment examined the relationship between these phenomena. Observers made speeded identity judgments of a colored target letter embedded among gray fillers. A response-compatible or -incompatible flanker of a non-target color appeared at varying distances from the target. Data gave evidence of LAI and spatially-graded FI, with mean RTs and flanker effects both decreasing with target–flanker separation. Both effects were reduced when target location was pre-cued and when the target was of higher salience than the flanker. Results suggest that the distribution of spatial attention modulates the strength of objects competing for selection, with this competition underlying both the FI and LAI effects.