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).     

Experimental Evidence From Newborn Chicks Enriches Our Knowledge on Human Spatial–Numerical Associations

Núñez and Fias raised concerns on whether our results demonstrate a linear number‐space mapping. Patro and Nuerk urge caution on the use of animal models to understand the origin (cultural vs. biological) of the orientation of spatial–numerical association. Here, we discuss why both objections are unfounded.     

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...     

Imprinted numbers: newborn chicks’ sensitivity to number vs. continuous extent of objects they have been reared with

Newborn chicks were tested for their sensitivity to number vs. continuous physical extent of artificial objects they had been reared with soon after hatching. Because of the imprinting process, such objects were treated by chicks as social companions. We found that when the objects were similar, chicks faced with choices between 1 vs. 2 or 2 vs. 3 objects chose the set of objects of larger numerosity, irrespective of the number of objects they had been reared with. Moreover, when volume, surface or contour length were controlled for using sets of 1 vs. 4, 1 vs. 6 or 1 vs. 3 objects, chicks resorted to choosing the larger object, rather than the familiar numerosity. When, however, chicks were reared with objects differing in their aspect (colour, size, and shape) and then tested with completely novel objects (of different colour and shape but controlled for continuous extent), they chose to associate with the same number of objects they had been reared with. These results suggest that identification of objects as different and separate individuals is crucial for the computation of number rather than continuous extent in numerical representation of small numerosities and provide a striking parallel with results obtained in human infants. Early availability of small numerosity discrimination by chicks strongly suggests that these abilities are in place at birth.     

Experience and geometry: controlled-rearing studies with chicks

Animals can reorient making use of the geometric shape of an environment, i.e., using sense and metric properties of surfaces. Animals reared soon after birth either in circular or in rectangular enclosures (and thus affording different experiences with metric properties of the spatial layout) showed similar abilities when tested for spatial reorientation in a rectangular enclosure. Thus, early experience in environments with different geometric characteristics does not seem to affect animals’ ability to reorient using sense and metric information. However, some results seem to suggest that when geometric and non-geometric information are set in conflict, rearing experience could affect the relative dominance of featural (landmark) and geometric information. In three separate experiments, newborn chicks reared either in circular- or in rectangular-shaped home-cages were tested for spatial reorientation in a rectangular enclosure, with featural information provided either by panels at the corners or by a blue-coloured wall. At test, when faced with affine transformations in the arrangement of featural information that contrasted with the geometric information, chicks showed no evidence of any effect of early experience on their relative use of geometric and featural information for spatial reorientation. These findings suggest that, at least for this highly precocial species, the ability to deal with geometry seems to depend more on predisposed mechanisms than on learning and experience after hatching.     

Training generalized spatial skills

Spatial transformation skills are an essential aspect of cognitive ability. These skills can be improved by practice, but such improvement has usually been specific to tasks and stimuli. The present study investigated whether intensive long-term practice leads to change that transcends stimulus and task parameters. Thirty-one participants (14 male, 17 female) were tested on three cognitive tasks: a computerized version of the Shepard-Metzler (1971) mental rotation task (MRT), a mental paper-folding task (MPFT), and a verbal analogies task (VAT). Each individual then participated in daily practice sessions with the MRT or the MPFT over 21 days. Postpractice comparisons revealed transfer of practice gains to novel stimuli for the practiced task, as well as transfer to the other, nonpracticed spatial task. Thus, practice effects were process based, not instance based. Improvement in the nonpracticed spatial task was greater than that in the VAT; thus, improvement was not merely due to greater ease with computerized testing.     

A challenging intervention with maternal anxiety: Babies requiring surgical correction of a congenital anomaly after missed prenatal diagnosis

The objective of this study is to assess the impact on maternal anxiety of a short‐term intervention in a particularly stressful situation, such as a surgical anomaly diagnosed only at birth after repeated negative prenatal ultrasounds. The patients were 30 mothers of babies requiring surgical correction of a congenital anomaly who were randomly assigned to an intervention (N = 16) or control (N = 14) group. The intervention group received standard care plus short‐term intervention that included weekly meetings with the psychologist and weekly team meetings. The control group received only standard care available on the Neonatal Surgery Unit. The main outcome measure was maternal anxiety levels, assessed at birth and on discharge with the Spielberger State–Trait Anxiety Inventory (STAI–S). Statistical comparisons were made, and no significant differences were found at birth in the STAI–S scores of the two groups. At discharge, the intervention group exhibited a much lower STAI–S score than the group without short‐term intervention. The authors concluded that psychological counseling for parents of newborn babies has been shown to be helpful. However, the impact of such assistance was shown to be particularly beneficial for parents facing the emotional stress of their children requiring unexpected surgical corrections of congenital anomalies at birth. Therefore, the presence of a psychologist, as part of the standard care of newborns requiring surgical correction, is recommended. ©2003 Michigan Association for Infant Mental Health.