A kinematic comparison of successful and unsuccessful tennis serves across the elite development pathway

While velocity generation is an obvious prerequisite to proficient tennis serve performance, it is also the only stroke where players are obliged to negotiate a unique target constraint. Therefore, the dearth of research attending to the accuracy component of the serve is surprising. This study compared the body, racquet and ball kinematics characterising successful serves and service faults, missed into the net, in two groups of elite junior female players and one professional female tennis player. Three-dimensional body, racquet and ball kinematics were recorded using a 22-camera VICON motion analysis system. There were no differences in body kinematics between successful serves and service faults, suggesting that service faults cannot be attributed to a single source of biomechanical error. However, service faults missing into the net are characterized by projection angles significantly further below the horizontal, implying that consistency in this end-point parameter is critical to successful performance. Regulation of this parameter appears dependent on compensatory adjustments in the distal elbow and wrist joints immediately prior to impact and also perceptual feedback. Accordingly, coordination of the distal degrees of freedom and a refined perception-action coupling appear more important to success than any isolated mechanical component of the service action.     

Covert and overt orienting of attention to emotional faces in anxiety

Attentional biases for emotional faces were investigated in high, medium, and low anxiety groups (N = 54) using a probe detection task. Four types of facial expression (threat, sad, happy, neutral) were used to examine the specificity of the bias. Attentional bias measures were derived from manual reaction times (RTs) to probes and the direction of initial eye movement (EM) to the faces. The RT data indicated enhanced vigilance for threat rather than neutral faces in high and medium, but not low, state anxiety. The bias for negative faces appeared to be a combined function of stimulus threat value and the individual's anxiety level. The RT bias did not seem to depend on overt orienting, as many participants made few EMs. However, those who made frequent EMs to the faces showed concordance between the RT and EM bias measures, and so the RT measure of attentional bias for negative versus positive faces at 500 ms appears to provide a valid index of the direction of initial orienting to emotional stimuli. There was no evidence of an anxiety - related bias for happy faces (predicted by the emotionality hypothesis), nor a dysphoria - related bias for sad faces. However, increased dysphoria scores were associated with reduced attentiveness to happy faces.     

Dissociated developmental trajectories for semantic and phonological false memories

False recognition following presentation of semantically related and phonologically related word lists was evaluated in 8-, 11-, and 13-year-olds. Children heard lists of words that were either semantic (e.g., bed, rest, wake …) or phonological associates (e.g., pole, bowl, hole …) of a critical unpresented word (e.g., sleep, roll), respectively. A semantic false memory was defined as false recognition of a semantically related but unpresented word. A phonological false memory was defined as false recognition of a phonologically related but unpresented word. False memories in the two tasks showed opposite developmental trends, increasing with age for semantic relatedness and decreasing with age for phonological relatedness.     

Book briefly noted

Introducing Applied Ethics Edited by Brenda Almond, Blackwell, 1995. Pp. 375. ISBN 0–631–19389–8. £45.00 (hbk), £14.99 (pbk).

Environmental Ethics Edited by Robert Elliot, Oxford University Press, 1995. Pp. 255. ISBN 9–19–875144–3. £9.95 (pbk)

Medicine and Moral Reasoning Edited by K.W.M. Fulford, Grant Gillett and Janet Martin Soskice Cambridge University Press, 1994. Pp. 207. ISBN 0–521–45325–9 £37.50 (hbk), £12.95 (pbk).

Enlightenment and Religion. Rational Dissent in Eighteenth‐century Britain Edited by Knud Haakonssen, Cambridge University Press, 1996. Pp. xii + 348. ISBN 0–521–56060–8. £40.00.

Dialettica, Arte e Società: Saggio su Theodor W. Adorno By Giacomo Rinaldi, Quattroventi, Urbino, 1994. Pp. 205. L. 30,000.

Relevance: Communication and Cognition, new revised edition, By Dan Sperber and Deirdre Wilson, Blackwell, 1995. Pp. 326. ISBN 0–631–19878–4. £15.99.

Autobiographical Reflections By Eric Voegelin (Edited, with Introduction, by Ellis Sandoz), Louisiana State University Press, 1996. Pp. 131. ISBN 0807120766 $10.95.     

The nontraditional female athlete: A case study

Abstract

Current research presents traditional female college student-athletes as unmarried and childless individuals between 18 and 24 years of age. However, many colleges/universities are experiencing increases in the number of nontraditional students returning to higher education following leave from academic involvement. Possibly, this has implications for an increase in nontraditional student athletes. This case study examined a Caucasian female (age 36), Division II state ranked distance runner at an historically Black college. Compared to female athletes discussed in the literature, this nontraditional athlete was similar in motivation, locus of control, self-esteem, and attentional focus. She was different in role conflict, social support, use of imagery, and anxiety experiences. Nontraditional athletes may have different support systems and vary in participation motivations from the traditional athletes in the literature. Practitioners need to understand nontraditional athletes and the influence of lifestyle differences in relation to training and performance. Practitioners working with nontraditional athletes should focus on the impact of lifestyle and role differences on psychological variables related to participation and performance.     

Death Anxiety Among University Students in Northern Ireland and Canada

Male and female university students in Northern Ireland (n = 315) and Canada (n = 255) completed Templer's Death Anxiety Scale (DAS) and the Taylor Manifest Anxiety Scale (MAS). Results of a discriminant function analysis indicated that Canadian students showed more concern about being afraid to die and thoughts of death, while students from the North of Ireland were more concerned about getting cancer, the shortness of life, and the viewing of a corpse. However, total DAS scores failed to show significance between group differences (p >.10). Correlations between DAS and MAS total scores were r =.34 for Northern Ireland and r =.31 for Canadian students.     

The disease concept of alcoholism: The persistence of an outmoded scientific paradigm

This paper discusses the reasons for the persistence of the disease model of alcoholism in the face of increasing evidence contradicting its basic assumptions. Data from in‐depth interviews with former problem drinkers are used to illustrate the ways in which the disease model: 1) shapes the empirical reality from which data for its support are derived, 2) implies methodological strategies which limit the possibility of its refutation and 3) blinds its supporters to the meaning of anomalous data. Implications for the immediate future of the disease model are discussed.     

A role for affect in the link between episodic simulation and prosociality

Prospection and prosociality are hallmarks of our species. Little is known, however, about how our ability to imagine or simulate specific future events contributes to our capacity for prosociality. Here, we investigated this relationship, revealing how the affective response that arises from a simulated prosocial event motivates a willingness to help a person in need. Across two experiments, people reported being more willing to help in specific situations after simulating future helping events that elicited positive (versus negative or neutral) affect. Positive affect increased engagement of theory of mind for the person in need, which in turn informed prosocial responses. Moreover, the subjective experience of scene imagery and theory of mind systematically couple together depending on the affective valence of future simulations, providing new insight into how affective valence guides a prosocial function of episodic simulation.