Sex differences in number line estimation: The role of numerical estimation

Sex differences in mathematical performance have frequently been examined over the last decades indicating an advantage for males especially when numerical problems cannot be solved by (classroom‐)learnt strategies and/or estimation. Even in basic numerical tasks such as number line estimation, males were found to outperform females – with sex differences argued to emerge from different solution strategies applied by males and females. We evaluated the latter using two versions of the number line estimation task: a bounded and an unbounded task version. Assuming that women tend more strongly to apply known procedures, we expected them to be at a particular disadvantage in the unbounded number line estimation task, which is less prone to be solved by specific strategies such as proportion judgement but requires numerical estimation. Results confirmed more pronounced sex differences for unbounded number line estimation with males performing significantly more accurately in this task version. This further adds to recent evidence suggesting that estimation performance in the bounded task version may reflect solution strategies rather than numerical estimation. Additionally, it indicates that sex differences regarding the spatial representation of number magnitude may not be universal, but associated with spatial–numerical estimations in particular.     

Cognitive Factors Affecting Freeze-like Behavior in Humans

Contemporary research on survival-related defensive behaviors has identified physiological markers of freeze/flight/fight. Our research focused on cognitive factors associated with freeze-like behavior in humans. Study 1 tested if an explicit decision to freeze is associated with the psychophysiological state of freezing. Heart rate deceleration occurred when participants chose to freeze. Study 2 varied the efficacy of freezing relative to other defense options and found “freeze” was responsive to variations in the perceived effectiveness of alternative actions. Study 3 tested if individual differences in motivational orientation affect preference for a “freeze” option when the efficacy of options is held constant. A trend in the predicted direction suggested that naturally occurring cognitions led loss-avoiders to select “freeze” more often than reward-seekers. In combination, our attention to the cognitive factors affecting freeze-like behavior in humans represents a preliminary step in addressing an important but neglected research area.     

The Relationship Between Perceived Parenting,Negative Core Beliefs,and Dysfunctional Attitudes Among Young Adults

Previous studies have found that perceived parenting is associated with dysfunctional attitudes that predict depression. However, few studies have empirically investigated processes by which perceived parenting is associated with dysfunctional attitudes. To fill this gap, this study tested the hypothesis that perceived low parental care would be associated with negative core beliefs, which, in turn, would be associated with dysfunctional attitudes. To strictly test the hypothesis, this study controlled for current depressive symptoms that could affect the relationships between study variables. The participants were 305 college students (141 females). The results differed by sex: for female students, the hypothesis was supported; for male students, negative core beliefs were associated with dysfunctional attitudes; however, perceived low care was not associated with negative core beliefs. The findings suggest that targeting low parental care and negative core beliefs for females and negative core beliefs for males may help prevent their dysfunctional attitudes and the resultant depression.     

Mental rotation with egocentric and object-based transformations

Two experiments were conducted to address methodological issues with past studies investigating the influence of egocentric and object-based transformations on performance and sex differences in mental rotation. In previous work, the egocentric and object-based mental rotation tasks confounded the stimulus type (embodied vs. non-embodied) and transformation task (egocentric vs. object-based). In both experiments presented here, the same stimuli were used regardless of the type of transformation but task instructions were modified to induce either egocentric (left–right judgment) or object-based (same–different judgment) processing. Experiment 1 used pairs of letters whereas Experiment 2 presented pairs of line-drawings of human hands. For both experiments, it was hypothesized that the mental rotation slope for response time would be steeper for object-based than for egocentric transformations. This hypothesis was verified in both experiments. Furthermore, Experiment 2 showed a reduced male advantage for egocentric compared to object-based rotations, whereas this pattern was reversed for Experiment 1. In conclusion, the present study showed that the influence of the type of transformation involved in mental rotation can be examined with the same set of stimuli simply by modifying task instructions.     

Angry faces are more resistant to forgetting than are happy faces: directed forgetting effects on the identity of emotional faces

Using the item-method directed forgetting paradigm (i.e. intentionally forgetting specified information), we examined directed forgetting of facial identity as a function of facial expression and the sex of the expresser and perceiver. Participants were presented with happy and angry male and female faces cued for either forgetting or remembering, and were then asked to recognise previously studied faces from among a series of neutral faces. For each recognised test face, participants also recalled the face’s previously displayed emotional expression. We found that angry faces were more resistant to forgetting than were happy faces. Furthermore, angry expressions on male faces and happy expressions on female faces were recognised and recalled better than vice versa. Signal detection analyses revealed that male faces gave rise to a greater sensitivity than female faces did, and male participants, but not female participants, showed greater sensitivity to male faces than to female faces. Several theoretical implications are discussed.     

The Walking Dead: The Anthropocene as a Ruined Earth

Much has been made of the claim that humanity has ascended to the status of a terrestrial force and inaugurated a new geological epoch, the Anthropocene. While attention has been paid to the contestable nature of the epoch and its disputed histories, insufficient attention has been paid to the significance of the Anthropocene for political praxis. Contrary to much Anthropocenic discourse that articulates a renewed sense of mastery over nature through assertions of humanity’s complete subsumption of the environment, recent work in both science and technology studies and human geography suggests an alternate reading of the Anthropocene as an epoch without mastery, one where humanity exists in a permanent state of vulnerability. The political significance of this state of vulnerability is explored through a reading of popular TV show The Walking Dead, a post-collapse narrative of a world in ruins and overrun by zombies. On a ruined earth, political praxis is orientated not towards a return of the earth to its previous productive state, but rather as an unending labour of survival and salvage. Survival is not a life reduced to bare life, but rather a state of tension between a life reduced to necessity, and the refusal to separate the question of how to live from the work of securing life itself. Left unresolved, this tension animates the politics of the Anthropocene, suggesting that in place of the teleology of progress social life is organised within it through unceasing care and repair time.     

The Anomaly Among Sexually Abusive Youth: The Juvenile Sex Trafficker

A hypothesized sketch of the atypical juvenile sex offender who engages in human sex trafficking is extrapolated from empirical data from the findings of victims of sex traffickers, juvenile sex offenders, and from one of the largest (N = 1056) cross-validation studies of a risk assessment tool in the field for sexually abusive youth. The tool, MEGA^?, assesses risk level of sexually abusive youth (4–19 years, males and females, adjudicated and non-adjudicated, including youth with low intellectual functioning). The compiled empirical data supports a paradigm describing one of the least known, or studied type of sexually abusive youth: the sexually abusive juvenile who engages in sex trafficking.     

Does interword spacing influence lexical processing in Chinese reading?

This study investigated how inserting spaces between Chinese words affected word recognition in Chinese reading. Eye movements of Chinese readers were recorded in a sentence reading task where high- and low-frequency target words were presented in both the spaced and normally unspaced texts. We found that fixation durations on target words were shorter in the high- than low-frequency conditions, and shorter in the spaced than unspaced conditions. The survival analysis revealed that interword spacing advanced the temporal onset of word frequency effects relative to the normally unspaced condition. However, inconsistent with the findings in English reading, there was no interaction between word frequency and interword spacing on all fixation duration measures, and the Bayes factor analyses also favoured the hypothesis of null interaction. These data suggest that interword spacing facilitates visual rather than lexical processing in Chinese reading, and thus improves our understanding on the roles of interword spacing across different writing systems.     

Transgender people in Australia's Northern Territory

While research has provided a significant picture of the lived experiences of transgender and sex/gender diverse (TSGD) Australians, it remains incomplete because population samples rarely include TSGD people from Australia's Northern Territory. The Northern Territory is twice the size of France but is populated by only 210,000 people. The territory's environmental and demographic features make it very distinct from Australia's other six states and mainland territory. Most notably, it possesses a "frontier" mentality and is considered to be one of Australia's most homophobic states and territories. This paper publishes the results of an online survey conducted as part of an ongoing research project into the health needs of TSGD individuals, such as availability of medical and support services that specialize in, and are "friendly" to, TSGD people, especially in remote areas of the territory, colloquially referred to as out bush.