Power-law island size distributions and the Avrami model

The island size distribution in the early stages of thin-film deposition is simulated using the Avrami model and is shown to follow closely a power-law form for both two- and three-dimensional island growth. This model applies to systems where the time-averaged monomer density is constant across the substrate, as occurs for example when the mean free path of the diffusing monomers is limited. It offers a possible explanation for recently observed island size distributions which are continuously decreasing functions of size in certain systems. The distribution of nearest-neighbour separations of the islands is also considered and it is shown that this distribution can be used to distinguish between island arrays formed in the Avrami model and those of deposition-diffusion-aggregation models.     

The Jerusalem of Jesus: space and Pentecostal-evangelical branding in Orlando’s Holy Land Experience and Eureka Spring’s Holy Land Tour

Jerusalem, Israel, holds a special place as a holy pilgrimage destination for devotees of Christianity and other religions, although travel to the holy sites of Jerusalem is costly and can be difficult for many. For evangelical Protestants (and especially Pentecostals), the significance of Jerusalem – as the place where Christ the Messiah lived and accomplished his works – can be mobilised and channelled (decentralised) by creating sites which participate in the spiritual ‘power’ of Jesus Christ. Spiritual ‘power’ in this sense is not dependent on recorded miracles or canonisation by a central religious authority, but in the creation of spaces which through various strategies effectively evoke for their Protestant consumers the ‘authenticity’ of Jesus’ Jerusalem, and thus the ‘power’ and ‘reality’ of Christ. This paper examines the spatial strategies and branding of two such sites, the Holy Land Experience (Orland, Florida) and the Holy Land Tour (Eureka Springs, Arkansas).     

When does priming justice promote forgiveness? On the importance of distributive and procedural justice for self and others

Two studies show that thinking about justice can both enhance and impede forgiveness, depending on whether thoughts about distributive and procedural justice for self and others are activated. In Study 1 (n = 197), participants expressed more forgiveness towards a prior transgressor when primed to think about justice for self or procedural justice for others, and less forgiveness when primed to think about distributive justice for others. Study 2 (n = 231) used an alternate priming method and replicated these effects by inducing an interpersonal transgression and measuring forgiveness intentions, emotions and behavior. Study 2 also showed that priming justice influences forgiveness especially when the perceived severity of an interpersonal offense is high. The current research shows that activating justice cognitions can enhance or impinge on forgiveness in predictable ways. We discuss contributions to emerging justice theory, potential implications, and future directions.     

Counseling Canadian Indigenous Peoples: The Therapeutic Alliance and Outcome

The aim of this study was to determine whether client therapeutic alliance ratings and client symptom severity were predictors of counseling outcomes among Canadian Indigenous clients. Participants included 179 Canadian Indigenous clients who completed an outcome measure at the 1st and last sessions and an alliance measure at both the 2nd and 3rd sessions. Results indicated that higher client alliance ratings at Sessions 2 and 3 and baseline client symptom severity were significant predictors of outcome. El objetivo de este estudio fue determinar si las valoraciones del cliente de la alianza terapéutica y la severidad de los síntomas del cliente fueron indicadores de los resultados de la consejería entre clientes indígenas canadienses. Los participantes incluyeron 179 clientes indígenas canadienses que completaron una medida de resultados en la primera y última sesión, además de una medida de la alianza en la segunda y tercera sesión. Los resultados indicaron que unas valoraciones del cliente más altas de la alianza en las sesiones 2 y 3 y la severidad preliminar de los síntomas del cliente fueron indicadores significativos del resultado.     

Automated vision occlusion-timing instrument for perception–action research

Vision occlusion spectacles are a highly valuable instrument for visual-perception–action research in a variety of disciplines. In sports, occlusion spectacles have enabled invaluable knowledge to be obtained about the superior capability of experts to use visual information to guide actions within in-situ settings. Triggering the spectacles to occlude a performer’s vision at a precise time in an opponent’s action or object flight has been problematic, due to experimenter error in using a manual buttonpress approach. This article describes a new laser curtain wireless trigger for vision occlusion spectacles that is portable and fast in terms of its transmission time. The laser curtain can be positioned in a variety of orientations to accept a motion trigger, such as a cricket bowler’s arm that distorts the lasers, which then activates a wireless signal for the occlusion spectacles to change from transparent to opaque, which occurs in only 8 ms. Results are reported from calculations done in an electronics laboratory, as well as from tests in a performance laboratory with a cricket bowler and a baseball pitcher, which verified this short time delay before vision occlusion. In addition, our results show that occlusion consistently occurred when it was intended—that is, near ball release and during mid-ball-flight. Only 8% of the collected data trials were unusable. The laser curtain improves upon the limitations of existing vision occlusion spectacle triggers, indicating that it is a valuable instrument for perception–action research in a variety of disciplines.     

Benchmarking Community-Based Couple Therapy: Considering Measurement Reactivity

Couple therapy has been shown to be effective in randomized clinical trials; however, results from naturalistic couple therapy have been less consistent. This study utilized a benchmarking approach to compare the effectiveness of couple therapy in a community-based setting with findings from efficacy treatments, such as treatment within randomized clinical trials. The current study is the largest couple therapy sample published to date (N = 3,347 couples). Clients in couple therapy were asked to provide initial and weekly ratings of symptomology on the Outcome Questionnaire (OQ-45.2). We found that treatment effect sizes found at community clinics were smaller than efficacy studies (i.e., the benchmark). However, when taking into account measurement reactivity, the effect sizes were comparable. This is the first benchmarking study for community-based couple therapy, allowing for meaningful comparisons and understanding of outcomes in real-world couple therapy. Implications for the field are offered in terms of evaluating community-based psychotherapy studies with benchmarking for couple therapy. Results of this study provide clinicians and researchers a way to meaningfully compare couple therapy outcomes, accounting for differences in community-based practices and randomized clinical trials. This benchmark also underscores the impact of measurement sensitivity, an issue commonly overlooked in psychotherapy research and practice.     

Attentional bias to angry faces using the dot-probe task? It depends when you look for it

A number of studies using the dot-probe task now report the existence of an attentional bias to angry faces in participants who rate highly on scales of anxiety; however, no equivalent bias has been observed in non-anxious populations, despite evidence to the contrary from studies using other tasks. One reason for this discrepancy may be that researchers using the dot-probe task have rarely investigated any effects which might emerge earlier than 500 ms following presentation of the threat-related faces. Accordingly, in the current study we presented pairs of face stimuli with emotional and neutral expressions and probed the allocation of attention to these stimuli for presentation times of 100 and 500 ms. Results showed that at 100 ms there was an attentional bias towards the location of the relatively threatening stimulus (the angry face in angry/neutral pairs and the neutral face in neutral/happy pairs) and this pattern reversed by 500 ms. Comparisons of reaction time (RT) scores with an appropriate baseline suggested that the early bias toward threatening faces may actually arise through inhibition of the relatively least threatening member of a face pair rather than through facilitation of, or vigilance towards, the more threatening stimulus. However the mechanisms governing the observed biases are interpreted, these data provide evidence that probing for the location of spatial attention at 500 ms is not necessarily indicative of the initial allocation of attention between competing emotional facial stimuli.