The influence of intentional and incidental learning on acquiring spatial knowledge during navigation

In order to study the influence of intentional and incidental learning conditions on route learning, young adults walked a route through a university building. Half of the participants focused their attention on the route (intentional learning condition), while the other half did not (incidental learning condition). Five tests of spatial knowledge were employed: a route-length-estimation, landmark recognition, landmark ordering, map-drawing and navigation task. The intentional group performed better than the incidental group on the map-drawing and navigation task. No difference between the intentional and incidental group was found on the landmark-recognition and landmark-ordering task. Moreover, the intentional group overestimated the walking distance, while the incidental group underestimated it. These results suggest that route knowledge (landmark recognition and landmark ordering) requires less effortful processing than survey knowledge (developing a map-like representation and actual navigation).     

Embodied simulation: From neurons to phenomenal experience

The same neural structures involved in the unconscious modeling of our acting body in space also contribute to our awareness of the lived body and of the objects that the world contains. Neuroscientific research also shows that there are neural mechanisms mediating between the multi-level personal experience we entertain of our lived body, and the implicit certainties we simultaneously hold about others. Such personal and body-related experiential knowledge enables us to understand the actions performed by others, and to directly decode the emotions and sensations they experience. A common functional mechanism is at the basis of both body awareness and basic forms of social understanding: embodied simulation. It will be shown that the present proposal is consistent with some of the perspectives offered by phenomenology.     

Generalization of delayed matching to sample following training at different delays

Four groups of pigeons were trained to perform a delayed matching-to-sample task with a single delay of 0, 2, 4, or 6 s from the outset of training. The longer the training delay, the more sessions were required for all birds to reach the same level of response accuracy. Following initial training, five test sessions that included nonreinforced trials with delay intervals of 0, 2, 4, 6, 8, and 10 s were interspersed between training sessions. Unlike typical forgetting functions in which accuracy decreases monotonically with increasing delay, the forgetting functions from test sessions resembled generalization gradients with the peak of the functions occurring at the training delay. Following additional training for all birds with a 0-s delay, forgetting functions decreased monotonically with increasing delay. The results suggested that remembering can be trained at a specific delay interval, and generalizes to similar delay intervals. Generalization along the temporal dimension of delay may contribute to typical forgetting functions in which accuracy decreases from 0-s delay.     

Enforced Disappearances and Torture Today: A View from Analytical Psychology

Enforced disappearance represents the quintessence of human rights violations with a strong psychological component. Bodies vanishing have a deterrent effect by terrorizing and paralyzing the entire society. However, the absence of those bodies is overly present in the inner experience of the families of the disappeared, who are victims in their turn. A state of severe psychological deterioration affects the relatives of the disappeared: depression, anxiety, powerlessness, guilt, post-traumatic stress disorder, inability to mourn, even suicide are the consequences of the unbearable uncertainty about the fate of the loved one. But the disappeared persons, notwithstanding the absence of their bodies, continue to be more present than ever in the inner experience of those who have loved them. For the families of the disappeared, to regain psychological equilibrium is a fine balance between the need to remember and the necessity to forget. The author affirms that, at a social and political level, to cultivate a collective memory of enforced disappearance is an ethical duty which validates the actual occurrence of the atrocities, helps prevent repetition and alleviates the transgenerational transmission of trauma.     

Philosophical behaviorism: a review of things that happen because they should: a teleological approach to action, by Rowland Stout.

Mentalistic terms such as belief and desire have been rejected by behavior analysts because they are traditionally held to refer to unobservable events inside the organism. Behavior analysis has consequently been viewed by philosophers to be at best irrelevant to psychology, understood as a science of the mind. In this book, the philosopher Rowland Stout argues cogently that beliefs and desires (like operants such as rats' lever presses) are best understood in terms of an interaction over time between overt behavior and its overt consequences (a viewpoint called teleological behaviorism). This book is important because it identifies the science of the mind with the science of overt behavior and implies that the psychologists best equipped to study mental life are not those who purport to do so but those who focus on the experimental analysis of behavior.     

Irrelevance of sample stimuli and directed forgetting in pigeons

A successive matching procedure was used to investigate which aspect of the test-omission procedure is responsible for establishing a postsample stimulus as a cue to forget in pigeons. It was found that a postsample stimulus that reliably followed a sample that was irrelevant to performance functioned as a cue to forget. This result was obtained regardless of whether termination of that postsample stimulus was followed by reinforcement or by the presentation of sample-independent discriminative stimuli. It was also found that a postsample stimulus that functioned as a cue to forget at the beginning of training lost that function when it was repeatedly presented on trials in which the sample was relevant to performance. These findings reveal that (a) neither a reduction in reinforcement rate nor the omission of the opportunity for discriminated responding is necessary to establish an effective cue to forget and (b) irrelevance of the sample to performance is a sufficient condition to establish a cue to forget. These results suggest that a postsample stimulus that is presented on trials in which remembering the sample is not reinforced differentially will come to set the occasion for not remembering the sample.     

提取诱发遗忘中的情绪记忆权衡效应

情绪记忆的提取诱发遗忘研究是近年来记忆研究领域的热点问题,但是尚无一致的结果。在现实生活中,我们所面临的情绪事件十分复杂,不仅包含核心的情绪信息,还包括边缘非情绪信息,研究已发现,人们对于这些复杂情绪事件不同成分的记忆效果也不是完全相同的。本研究通过2个实验分别探讨提取练习整张复杂情绪图片和提取练习复杂情绪图片的背景成分时的提取诱发遗忘现象。结果表明:(1)无论提取练习完整信息还是相关的边缘信息,均在提取诱发遗忘中存在显著的情绪记忆权衡效应;(2)消极情绪项目像中性项目一样也能产生提取诱发遗忘效应;(3)不论提取图片的完整信息还是背景信息,都仅在中心项目上表现出提取诱发遗忘,边缘背景没有出现提取诱发遗忘。     

Retrieval-induced forgetting is associated with increased positivity when imagining the future

People often think of themselves and their experiences in a more positive light than is objectively justified. Inhibitory control processes may promote this positivity bias by modulating the accessibility of negative thoughts and episodes from the past, which then limits their influence in the construction of imagined future events. We tested this hypothesis by investigating the correlation between retrieval-induced forgetting and the extent to which individuals imagine positive and negative episodic future events. First, we measured performance on a task requiring participants to imagine personal episodic events (either positive or negative), and then we correlated that measure with retrieval-induced forgetting. As predicted, individuals who exhibited higher levels of retrieval-induced forgetting imagined fewer negative episodic future events than did individuals who exhibited lower levels of retrieval-induced forgetting. This finding provides new insight into the possible role of retrieval-induced forgetting in autobiographical memory.     

The semantic/episodic distinction: The case for social information processing

The directed-forgetting paradigm was used in order to dissociate episodic from semantic processes in an impression formation task. Results demonstrate that incongruent behaviors are more prone to manipulations that disrupt episodic memory, whereas congruent behaviors are unaffected by such manipulations. The results suggest that the distinction between episodic and semantic memory processes is central for the understanding of social information processing. An explanation is put forward according to which the incongruency effect, a signature effect of impression formation, is due to an episodic encoding advantage for incongruent behaviors because of their semantically isolated nature, and their impoverished semantic encoding.