Variations in Linear and Nonlinear Postural Measurements under Achilles Tendon Vibration and Unstable Support-Surface Conditions

Reduced support-surface stability has been shown to attenuate the effect of Achilles tendon vibration on backward body displacement. In the present study, 20 participants performed a quiet, upright standing task on a stable and sway-referenced support, with and without vibration. The authors calculated equilibrium scores (ES), approximate entropy (ApEn), and mean and peak power spectral density frequencies of center-of-pressure variations. It was found that ES values decreased with the addition of vibration and in the sway-referenced support condition. ApEn values decreased with the addition of vibration but only with a stable support. Conversely, mean and peak frequencies increased with the addition of vibration, independent of support stability. These results suggest that the role of ankle proprioceptive input changes depending on support-surface characteristics and demonstrate the value of using both linear and nonlinear measures of postural sway.     

Repeated measurement of salivary cortisol within and across days among shy young adults

Temperamental shyness emerges early in childhood and remains relatively stable throughout development and has been associated with high and low levels of the stress hormone cortisol. Studies examining the relation between shyness and cortisol have been limited because they have traditionally collected only one measure of cortisol on a single day in the laboratory, restricting the reliability and diurnal profile of the measure in the participant’s everyday environment. We collected 15 saliva samples across three separate days (i.e., upon waking, +60 min post-waking, +8 h post-waking, +10 h post-waking, and bedtime) in a sample of healthy young adults selected for high and low shyness in order to characterize a portion of the diurnal cortisol rhythm. Overall, shy individuals demonstrated relatively lower cortisol across the day and across multiple mornings than non-shy adults. Higher self-reported social anxiety across multiple measures was also related to lower total cortisol levels across all participants. The present study replicates and extends our previous findings of low salivary cortisol measured in the laboratory in shy adults to repeated measurement in their everyday environments.     

Canada 2001: Alternative futures for the Canadian communities

The global “problématique humaine” is described in terms of the “grand issues” of population, resources, development in the rich and poor countries, and the environment. Three competing paradigms about the future and their implications for the Canadian communities are examined, and a model is offered showing interrelationships between the different Canadian communities, organizational levels, and various societal/environmental activities. A comprehensive programme of future‐oriented studies is proposed.

This article is a shortened version of a monograph to appear as one of a series entitled Queen's Studies of the Future of the Canadian Communities, published by the Institute of Intergovernmental Relations, Queen's University, Kingston, Ontario. The research was funded by the Donner Canadian Foundation.     

I like you,I like you not: Understanding the formation of context-dependent automatic attitudes

Previous research has shown that automatic evaluations can be highly context dependent. Expanding on past research demonstrating context effects for existing attitudes toward familiar objects, the present research examined basic principles that guide the formation of context-dependent versus context-independent automatic attitudes. Results from four experiments showed that: (a) newly formed attitudes generalised to novel contexts when prior experiences with the attitude object were evaluatively homogeneous; (b) when prior experiences were evaluatively heterogeneous, automatic evaluations became context sensitive, such that they reflected the contingency between the valence of prior experiences and the context in which these experiences occurred; and (c) when prior experiences were evaluatively heterogeneous across different contexts, novel contexts elicited automatic evaluations that reflected the valence of first experiences with the attitude object. Implications for research on automatic evaluation and attitude change are discussed.     

Quitting smoking: The importance of non-smoker identity in predicting smoking behaviour and responses to a smoking ban

Objective: We examined how ‘smoker’ and ‘non-smoker’ self- and group-identities and socio-economic status (SES) may predict smoking behaviour and responses to antismoking measures (i.e. the Dutch smoking ban in hospitality venues). We validated a measure of responses to the smoking ban.

Design: Longitudinal online survey study with one-year follow-up (N = 623 at T1 in 2011; N = 188 at T2 in 2012) among daily smokers.

Main outcome measures: Intention to quit, quit attempts and ‘rejecting’, ‘victimizing’, ‘socially conscious smoking’ and ‘active quitting’ responses to the smoking ban.

Results: Non-smoker identities are more important than smoker identities in predicting intention to quit, quit attempts and responses to the smoking ban, even when controlling for other important predictors such as nicotine dependence. Smokers with stronger non-smoker identities had stronger intentions to quit, were more likely to attempt to quit between measurements, and showed less negative and more positive responses to the smoking ban. The association between non-smoker self-identity and intention to quit was stronger among smokers with lower than higher SES.

Conclusion: Antismoking measures might be more effective if they would focus also on the identity of smokers, and help smokers to increase identification with non-smoking and non-smokers.     

Assessing spiritual well-being: relating with God explains greatest variance in spiritual well-being among Australian youth

How do we set standards in assessing spiritual well-being (SWB)? Most measures provide only scores on arbitrary scales. Therefore, if the questions differ, the scores are likely to as well. This paper reports on two scales developed with 460 Australian secondary school students, with diverse cultural and religious backgrounds, from state, Catholic, Christian Community and independent schools. The four domains model of spiritual health/well-being was the theoretical base from which 12 items were developed to reflect quality of relationships with each of self, others, environment and God/the Divine. The instrument with the five top-scoring items in each domain, known as Spiritual Health And Life-Orientation Measure (SHALOM), has been sought for use in over 200 studies in 20 languages. The second-highest sets of five items were extracted and found to form statistically valid factors, for a new instrument called SWBQ2. As would be expected, the mean values for the factor scores varied between SHALOM and SWBQ2, overall and by school type. However, regression analyses of the lived experience scores showed that relating with God provided greatest explanation of variance in SWB, on both measures. A double-response method introduced for SHALOM was also used with SWBQ2 to compare each person’s lived experience with their ideals, better reflecting quality of relationships, rather than just the arbitrary scores. There was negligible difference in dissonance scores on the four factors in both measures, that is, in comparing the difference between ideals and lived experiences. This method showed consistency in the quality of relationships reflecting SWB, contrasted with variance shown using only lived experience, as mentioned above. Relating with God was again most influential on SWB. These findings have implications for methods used in assessing SWB as well as outcomes.     

Empirically based psychology of Islam: summary and critique of the literature

In this paper, we systematically review the growing empirically based psychology of Islam. We arrive at 10 conclusions: (l) Islam is a multidimensional religion; Islam might mean different things to different people, and some people might adhere to some of its elements but not to others; (2) Islam is similar to, but is different from, other religions; (3) Islam's role in the lives of Muslims seems mostly positive; (4) Some types of Islamic religiousness are negative; (5) The empirical findings have not been translated yet into clinical applications; (6) Most of studies conducted among Muslims provide only a birds-eye view of Islam; (7) Empirical studies of Muslims are scarce; (8) Empirical research on negative types of religiousness among Muslims is sparse; (9) The majority of research in this field has been restricted to convenient samples; (10) Several important topics with implications for Muslims deserve further consideration, and there is a need for more varied research methods in studies of Muslims. The implications of these findings and the limitations of this review are discussed.     

Revisiting desirable response bias in well-being reports

Growing popular interest in positive psychology may have important implications for the measurement of well-being. Five studies tested the prediction that well-being ratings are influenced by desirability bias. In Study 1, participants (N?=?176) instructed to fake good endorsed higher well-being; those instructed to fake bad endorsed lower well-being, compared to controls. In Studies 2 and 3 (N’s?=?111, 121), control participants endorsed higher levels of well-being compared to those attached to a bogus pipeline. These differences were mediated by desirability bias. In Study 4 (N?=?417), instruction manipulations did not affect well-being levels, but presenting a desirability measure prior to well-being measures attenuated the correlations between them. In Study 5 (N?=?391), however, this order effect did not replicate. We discuss the importance of continued vigilance for desirability bias in well-being research as a ready solution to this clear problem remains elusive.     

Publication standards in infancy research: Three ways to make Violation-of-Expectation studies more reliable

The Violation-of-Expectation paradigm is a widespread paradigm in infancy research that relies on looking time as an index of surprise. This methodological review aims to increase the reliability of future VoE studies by proposing to standardize reporting practices in this literature. I review 15 VoE studies on false-belief reasoning, which used a variety of experimental parameters. An analysis of the distribution of p-values across experiments suggests an absence of p-hacking. However, there are potential concerns with the accuracy of their measures of infants’ attention, as well as with the lack of a consensus on the parameters that should be used to set up VoE studies. I propose that (i) future VoE studies ought to report not only looking times (as a measure of attention) but also looking-away times (as an equally important measure of distraction); (ii) VoE studies must offer theoretical justification for the parameters they use, and (iii) when parameters are selected through piloting, pilot data must be reported in order to understand how parameters were selected. Future VoE studies ought to maximize the accuracy of their measures of infants’ attention since the reliability of their results and the validity of their conclusions both depend on the accuracy of their measures.     

Measuring Religion in War: A Response

We respond to Isak Svensson's reaction to our article titled “Shrouded: Islam, War, and Holy War in Southeast Asia,” which was published in Volume 53 of the Journal for the Scientific Study of Religion.