Priming effects in picture fragment completion: support for the perceptual closure hypothesis

The perceptual closure hypothesis says that priming will be optimum when just enough information is available in the prime to support closure. Across 5 experiments, a moderately complete fragmented image (Level 4) produced more priming than an almost complete (Level 7) or a very incomplete (Level 1) fragmented image. Only Level 4 priming was improved by increases in prime duration and by showing the prime again after Ss attempted to identify it. Explicit memory played little role in primed fragment completion except for Level 1 priming, in which specific fragment memory was responsible for the entire effect. In contrast, true perceptual learning was shown to be responsible for Level 4 and Level 7 priming. These priming effects cannot be accounted for by the transfer-appropriate procedures approach of Roediger and his colleagues because Level 1 priming produced less transfer to Level 1 identification at test than Level 4 priming did.     

Does the generation effect occur for pictures?

The generation effect is the finding that self-generated stimuli are recalled and recognized better than read stimuli. The effect has been demonstrated primarily with words. This article examines the effect for pictures in two experiments: Subjects named complete pictures (name condition) and fragmented pictures (generation condition). In Experiment 1, memory was tested in 3 explicit tasks: free recall, yes/no recognition, and a source-monitoring task on whether each picture was complete or fragmented (the complete/incomplete task). The generation effect was found for all 3 tasks. However, in the recognition and source-monitoring tasks, the generation effect was observed only in the generation condition. We hypothesized that absence of the effect in the name condition was due to the sensory or process match effect between study and test pictures and the superior identification of pictures in the name condition. Therefore, stimuli were changed from pictures to their names in Experiment 2. Memory was tested in the recognition task, complete/incomplete task, and second source-monitoring task (success/failure) on whether each picture had been identified successfully. The generation effect was observed for all 3 tasks. These results suggest that memory of structural and semantic characteristics and of success in identification of generated pictures may contribute to the generation effect.     

Reflections by a Contextual Caregiver on Susan E. Myers-Shirk’s <Emphasis Type="Italic">Helping the Good Shepherd: Pastoral Counselors in a Psychotherapeutic Culture 1925–1975</Emphasis>

This article reviews Susan E. Myers-Shirk’s book from the lens of contextual caregiving in order to illustrate the text’s contribution in its attention to gendered moralism and the shift toward a liberal moral sensibility in the history of pastoral counseling; it also challenges the one-sided portrayal of the history of pastoral counseling in relation to issues of culture and power.     

Subchance perception: Anxious, non-defensive individuals identify subliminally-presented positive words at below-chance levels

People who chronically experience anxiety are biased towards subliminally-presented negative information. Recent research has shown that they may also avoid subliminally-presented positive information. However, these findings are equivocal due to the limitations of previous paradigms and measures. This paper reports two experiments demonstrating that highly anxious, non-defensive individuals exhibit subchance perception when attempting to identify subliminally-presented positive words; that is, they identify such words with accuracy rates that are below chance (guessing). Participants attempted to identify masked positively and negatively valenced words that had been presented briefly (6.4 ms) in a two-alternative forced-choice paradigm. In Experiment 1, persons high in trait anxiety and low in defensiveness identified positive words at below-chance levels and negative words at above-chance levels. No other participant-group’s performance differed from chance. In Experiment 2, persons high in trait anxiety and low in defensiveness again exhibited subchance perception of positive words when responding quickly. This represents the clearest evidence to date that anxious, non-defensive individuals systematically avoid subliminally-presented positive information.     

An Adaptive-landscape Model For Joyce's Ulysses

In this paper, I examine a birth ritual practised by a community of low‐status entertainers from the Indian state of Rajasthan known as Bhats. On the birth of sons, but not daughters, Bhats offer gifts to the Hindu god Bhaironji, a pan‐Indian boss of the underworld. Specifically, they sacrifice a goat, extract its stomach, slice it open so that it forms a gaping slit, and pass their wailing newborn through the dripping opening seven times. This ritual, which I interpret as a symbolic child sacrifice, would seem to exemplify ‘Sanskritisation’—the low caste copying of elite life‐styles—in the way Bhats imitate dominant Hindu ideals implicit to a kingly tradition of blood sacrifice. However, I contend that this feast is unique in the way that Bhats simultaneously mimic and appropriate, subvert and contest, as well as rework and combine ritual traditions associated with both kings and priests.     

Unconscious perception: a model-based approach to method and evidence

Unconscious perceptual effects remain controversial because it is hard to rule out alternative conscious perception explanations for them. We present a novel methodological framework, stressing the centrality of specifying the single-process conscious perception model (i.e., the null hypothesis). Various considerations, including those of SDT (Macmillan & Creelman, 1991), suggest that conscious perception functions hierarchically, in such a way that higher level effects (e.g., semantic priming) should not be possible without lower level discrimination (i.e., detection and identification). Relatedly, alternative conscious perception accounts (as well as the exhaustiveness, null sensitivity, and exclusiveness problems-Reingold & Merikle, 1988, 1990) predict positive relationships between direct and indirect measures. Contrariwise, our review suggests that negative and/or nonmonotonic relationships are found, providing strong evidence for unconscious perception and further suggesting that conscious and unconscious perceptual influences are functionally exclusive (cf. Jones, 1987), in such a way that the former typically override the latter when both are present. Consequently, unconscious perceptual effects manifest reliably only when conscious perception is completely absent, which occurs at the objective detection (but not identification) threshold.     

The word-frequency paradox for recall/recognition occurs for pictures

A yes-no recognition task and two recall tasks were conducted using pictures of high and low familiarity ratings. Picture familiarity had analogous effects to word frequency, and replicated the word-frequency paradox in recall and recognition. Low-familiarity pictures were more recognizable than high-familiarity pictures, pure lists of high-familiarity pictures were more recallable than pure lists of low-familiarity pictures, and there was no effect of familiarity for mixed lists. These results are consistent with the predictions of the Search of Associative Memory (SAM) model.     

Perceptual identification thresholds for 150 fragmented pictures from the Snodgrass and Vanderwart picture set

This paper reports perceptual identification thresholds for 150 pictures from the 1980 Snodgrass and Vanderwart picture set. These pictures were fragmented and presented on the Apple Macintosh microcomputer in a picture-fragment completion task in which identification thresholds were obtained at three phases of learning: Train (initial presentation), New (initial presentation after training on a different set), and Old (repeated presentation of the Train set). Pictures were divided into five sets of two subsets of 15 pictures each, which served alternately as the Train and New sets. A total of 100 subjects participated in the task, with 10 subjects assigned to each subset. Individual thresholds for each picture at each phase of learning are presented, along with the fragmented pictures identified by 35% of the subjects across the Train and New learning phases. This set of fragmented pictures is provided for use in experiments in which a single level of fragmented image is presented for identification after a priming phase. Correlations between the Snodgrass and Vanderwart norms and identification thresholds at the three phases of learning are also reported.     

Fragmenting pictures on the apple macintosh computer for experimental and clinical applications

A set of procedures implemented in Microsoft BASIC is described that creates fragmented versions of pictures scanned into the Apple Macintosh, stores them as resource files, and presents them in a computerized perceptual memory test. A total of 150 pictures were selected from the Snodgrass and Vanderwart (1980) set for fragmentation. The perceptual memory test provides for five forms of 30 pictures each, divided into two sets of 15 that serve alternately as the training or old set and the new set. A training set of 15 pictures is presented for identification during the first (training) phase of the test. The second (test) phase presents the training pictures again, randomly mixed with 15 new pictures for identification. The performance of 100 subjects on the memory test is presented, along with results for each form. Overall, subjects showed improvement on the task with practice (skill learning), indexed by a decrease in thresholds from the training set to the new set. Subjects also showed large savings for the repeated pictures (perceptual learning), indexed by a decrease in thresholds from the new to the old set.     

Developmental picture norms: Relationships between name agreement,familiarity, and visual complexity for child and adult ratings of two sets of line drawings

Developmental differences in name agreement, familiarity, and visual complexity in response to line drawings of common objects were obtained from children and adults. Sixty-one pictures were taken from the Peabody Picture Vocabulary Test-Revised and 259 pictures were taken from the set normed for adults by Snodgrass and Vanderwart (1980). Although there were some differences between the two sets of pictures, the present results replicated the relative independence of these three measures, which was reported by Snodgrass and Vanderwart for adults. Children and adults showed substantial agreement on the names of the pictures. Although the children’s ratings were lower on all measures, the differences were trivial for most pictures. We concluded that judgments of familiarity, complexity, and the names of line drawings of common objects are based primarily on information processing accomplished prior to age 7.