Cerebellar ataxia: quantitative assessment and cybernetic interpretation

To assess neuromotor disorders clinicians often rely on rating scales. Unfortunately, these scales lack the sensitivity and accuracy needed to detect the small changes in motor coordination that reflect the clinical progression of the disease on the basis of which treatment programmes can be adjusted. As a contribution to this topic, the present paper proposes a straightforward kinematic and kinetic analysis of reaching movements of patients with cerebellar ataxia in conjunction with a cybernetic interpretation of the data. The aim of the approach is to capture key deficits in the underlying motor control processes. We suggest that cerebellar ataxia may be characterized by defective feedforward control.     

Adolescents' communication styles and learning about birth control

Adolescents have different communication styles for acquiring information about birth control from a mass medium--interactant or noninteractant, depending on whether they involve communication with others in the process of media use. Three interactant styles are identified: a home-oriented style, where communication is primarily with immediate members and friends; a peer-oriented style, where communication is primarily with own-age peers and personal friends; and multi-source user, where communication is with more than one cluster of sources and the majority of one's communication is not with any particular source. The noninteractant style identified is a media-oriented style, where the adolescent relies exclusively on the mass media for information acquisition without communicating with anyone about the content or process of learning. Data suggest that the interactant style, especially for the multi-source user, is most beneficial for new learning. Gender and the presence of siblings at home are important moderators of the relationship between communication styles and knowledge of birth control. For example, females with a media-oriented style know more about birth control than females with a home-oriented style. Implications of the findings for the delivery of birth control information to adolescents are discussed.     

Optimizing the digital customer journey—Improving user experience by exploiting emotions,personas and situations for individualized user interface adaptations

This paper discusses a novel approach for exploiting emotions and situation-aware software adaptation methods for individualizing some of the touch points of the digital customer journey and thereby optimizing customer experience and effectiveness of e-commerce applications. Our approach uses emotion recognition, eye-tracking, and other individual tracking methods as well as customer personas for adapting interactive web applications by accessing a flexible adaptation framework at runtime. The framework allows for individualization at runtime by applying situation-aware adaptations. Two experimental customer studies were carried out in the e-commerce domain in order to provide a basis for exploitable emotion- and persona-related situational changes. The results of the studies were used to demonstrate the potential of our situation analytic adaptation approach with examples from a commercial beauty-products e-business portal.     

Contexts and experimentalism in the psychology of Gabriele Buccola (1875-1885)

Gabriele Buccola, since his untimely death, often has been mentioned as the first Italian psychologist who developed a strict program of laboratory research. Buccola, a Sicilian of Albanian ancestry, is a "case" in the history of Italian psychology. A self-taught positivist, he established a relation with the major representatives of the European positivism. Kraepelin mentions him as one of the precursors of his project of applying experimental psychology to psychopathology. Buccola actually carried out research on the psychological, chemical-biological, and psychopathological "modifiers" of reaction times, following an experimental program dealing mainly with the differential study both of basic and superior psychological processes, with mental hygiene ends. Historians of psychology agree in considering Buccola the first Italian laboratory psychologist to plan a program of research that was close to European psychological experimentalism.The present article, starting from an outline of Buccola's role in the rising Italian scientific psychology, recontextualizes his experimentalism in an international sphere. This operation, which is carried out through a careful survey of Buccola's entire production-both theoretical and more properly scientific-is based on the search of the Darwinian, Spencerian, and Haeckelian evolutionist themes emerging from Buccola's program of research-a program that was influenced by the variegated European experimental panorama and characterized by the vision of science as a knowledge capable of transforming the nature of man and of society.     

Where the brain appreciates the final state of an event: The neural correlates of telicity

In this study we investigated whether the human brain distinguishes between telic events that necessarily entail a specified endpoint (e.g., reaching), and atelic events with no delimitation or final state (e.g., chasing). We used functional magnetic resonance imaging to explore the patterns of neural response associated with verbs denoting telic and atelic events, and found that the left posterior middle temporal gyrus (pMTG), an area consistently engaged by verb processing tasks, showed a significantly higher activation for telic compared with atelic verbs. These results provide the first evidence that the human brain appreciates whether events lead to an end or a change of state. Moreover, they provide an explanation for the long-debated question of which verb properties modulate neural activity in the left pMTG, as they indicate that, independently of any other semantic property, verb processing and event knowledge in this area are specifically related to the representation of telicity.     

Effects of pointing on the recall of simultaneous and sequential visuospatial arrays: a role for retrieval strategies?

The present four experiments examined the effects of pointing movements towards the target locations in a modified free recall task. Three factors were manipulated: the order of the move/no-move trials (blocked or mixed), the type of stimuli presentation (simultaneous or sequential) and the size of the to-be-recalled configurations (7-9 and 5-7 items). Results showed that pointing significantly decreased visuospatial performance both with a mixed and a blocked design. However, in the blocked condition the interference effect of pointing was load-dependent (being inversely related to array size) and occurred only when participants pointed to all stimuli in the first block. Post hoc analyses supported the conclusion that pointing movements interfered with the on-line development of appropriate retrieval strategies, like parsing the configurations into smaller chunks or creating global visual images.     

The relationship between divided attention and implicit memory: a meta-analysis

This article reports a meta-analysis comparing the size of repetition priming in full and divided-attention (DA) conditions. The main analysis included 38 effect sizes (ES) extracted from 21 empirical studies, for a total of 2074 (full-attention) and 2148 (divided-attention) participants. The mean weighted ES was 0.357 (95% CI = 0.278–0.435), indicating that divided attention produced a small, but significant, negative effect on implicit memory. Overall, the distinction between identification and production priming provided the best fit to empirical data (with the effect of DA being greater for production tests), whereas there was no significant difference between perceptual and conceptual priming. A series of focused contrasts suggested that word-stem completion might be influenced by lexical–conceptual processes, and that perceptual identification might involve a productive component. Implications for current theories of implicit memory are discussed.     

The factor structure of the Inventory of Parent and Peer Attachment (IPPA): A survey of Italian adolescents

Despite the intensive use of the Inventory of Parent and Peer Attachment (IPPA), a measure of attachment which centres on individual differences in adolescents and their ability to evaluate their relationships with parents and peers, the factor structure of the inventory requires further investigation. This study of 1059 Italian adolescents compared the three models which are discussed in the literature: the one-factor model (attachment security), the two-factor model (trust-communication and alienation) and the three-factor model (trust, communication and alienation), and examined the influences of age and gender on the IPPA’s scores. Our findings provide support for the reliability of the latest and longer version of the IPPA (75-item). Factor analysis showed that the three-factor model had the best fit, although the three dimensions are strongly interrelated. Sixteen year olds had lower attachment security to their fathers than the results of the other adolescent age groups. Males reported lower alienation scores than females in the paternal form, while females had higher attachment security, trust and communication scores than males in the peers form.     

Implicit chord processing and motor representation in pianists

The aim of this paper is to assess the relevance of pitch dimension in auditory–motor interaction. Several behavioural and brain imaging studies have shown that auditory processing of sounds can activate motor representations, an effect which is however elicited only by action-related sounds, i.e., sounds linked to a specific motor repertoire. Music provides an appropriate framework for further exploration of this issue. Three groups of participants (pianists, non-pianist musicians and non-musicians) were tested with a shape decision task where left-hand and right-hand responses were required; each visual stimulus was paired with an auditory task-irrelevant stimulus (high-pitched or low-pitched piano-timbre chords). Of the three groups, only pianists had longer reaction times for left-hand/high-pitched chords and right-hand/low-pitched chords associations. These findings are consistent with an auditory-motor effect elicited by pitch dimension, as only pianists show an interaction between motor responses and implicit pitch processing. This interaction is consistent with the canonical mapping of hand gestures and pitch dimension on the piano keyboard. The results are discussed within the ideo-motor theoretical framework offered by the Theory of Event Coding (Hommel et al. in Behav Brain Sci 24:849–937, 2001).     

Collaboration in implicit memory: evidence from word-fragment completion and category exemplar generation

Psychological Research - Recent studies have begun to investigate the effects of collaboration on explicit tests such as free recall, cued recall, and recognition. In contrast, little is known...