Establishing the reliability of word association data for investigating individual and group differences

This paper argues that, across different psychological contexts, the methods of data collection, treatment and analysis in word association tests have hitherto been inconsistent. We demonstrate that this inconsistency has resulted from inadequate control, in previous studies, of certain important variables including the basis of norm comparisons, and we present a principled method for collecting, scoring and analysing association responses, to address these issues. The method is evaluated using test and retest datasets from 16-year-old and over-65-year-old twins (n=636), which enable us to (a) compare samples matched for key environmental variables, (b) assess the transferability of norming information between age cohorts, and (c) evaluate the reliability of the scoring protocols. We find systematic differences in the association behaviour of the two age cohorts, indicating the importance of evaluating data only against norms lists which are matched to the target population. Individual association behaviour is found to be consistent across test times, both in terms of response stereotypy and response type

Potential for rabies control through dog vaccination in wildlife-abundant communities of Tanzania

Canine vaccination has been successful in controlling rabies in diverse settings worldwide. However, concerns remain that coverage levels which have previously been sufficient might be insufficient in systems where transmission occurs both between and within populations of domestic dogs and other carnivores. To evaluate the effectiveness of vaccination targeted at domestic dogs when wildlife also contributes to transmission, we applied a next-generation matrix model based on contract tracing data from the Ngorongoro and Serengeti Districts in northwest Tanzania. We calculated corresponding values of R0, and determined, for policy purposes, the probabilities that various annual vaccination targets would control the disease, taking into account the empirical uncertainty in our field data. We found that transition rate estimates and corresponding probabilities of vaccination-based control indicate that rabies transmission in this region is driven by transmission within domestic dogs. Different patterns of rabies transmission between the two districts exist, with wildlife playing a more important part in Ngorongoro and leading to higher recommended coverage levels in that district. Nonetheless, our findings indicate that an annual dog vaccination campaign achieving the WHO-recommended target of 70% will control rabies in both districts with a high level of certainty. Our results support the feasibility of controlling rabies in Tanzania through dog vaccination

A Novel Approach to Investigating Basketball Expert\u27s Perceptions of the Hot Hand

The hot hand and psychological momentum (PM) are two closely related concepts that propose that previous success increases the chances of future success (Jackson & Mosurski, 1997). Statistical evidence for the existence of the hot hand or PM is mixed (Bar-Eli, Avugos, & Raab, 2006; Bocskocsky, Ezekowitz, & Stein, 2014; Sun, 2004). However players’, coaches ’, and fans ’perspectives show that PM or the hot hand is believed to be an extremely important aspect within sport (Gilovich, Tversky, & Vallone, 1985; Jones & Harwood, 2008). A key component of this phenomenon is the ability to predict future performance based on the appearance of momentum and this ability relies on human decision-making. The current study examined how the hot hand impacts human decision making by having collegiate level basketball players (N = 18) and coaches (N = 5) predict shot outcome while watching a taped college game. While the players and coaches were no more accurate than a random model at predicting shot outcome, they did outperform the random model when predicting shots taken by a hot shooter. The implications of basketball player and coaches relying on the hot hand when making decisions are discussed. Additionally, a positive correlation was seen between basketball expertise (number of years as player/coach) and prediction accuracy. This result and implications for future research to better understand how the hot hand is used to make decisions are discussed

Stylistic analysis of stone arrangements supports regional cultural interactions along the northern Great Barrier Reef, Queensland

Stone arrangements are frequently encountered on the Australian mainland and islands. They have high significance values to Indigenous Australians and are usually associated with the material expression and emplacement of socio-religious beliefs and associated ceremonial/ritual activities. Despite their ubiquity, stone arrangements are an understudied site type with their distribution and morphological variability remaining poorly documented and their functional variability poorly understood. Although in most parts of Australia the authorship of stone arrangements is unambiguously Aboriginal, for far north Queensland this is less clear for places where Aboriginal people and Torres Strait Islanders, and more recently South Sea Islanders, all with documented traditions of stone arrangement construction and use, are known to have operated. A comparative stylistic analysis of stone arrangements constructed by Aboriginal people, Torres Strait Islanders and Island Melanesians of the southwest Pacific reveals that although Lizard Island Group stone arrangements are predominately of Aboriginal authorship, some arrangements exhibit cultural influences from neighbouring areas. In this respect, Lizard Island Group stone arrangements appear to be a further material expression of the Torres Strait Cultural Complex and Coral Sea Cultural Interaction Sphere