Dogs can discriminate between human baseline and psychological stress condition odours.

Previous research suggests that dogs can detect when humans are experiencing stress. This study tested whether baseline and stress odours were distinguishable to dogs, using a double-blind, two-phase, three-alternative forced-choice procedure. Combined breath and sweat samples were obtained from participants at baseline, and after a stress-inducing (mental arithmetic) task. Participants' stress was validated with self-report and physiological measures recorded via a Biopac MP150 system. Thirty-six participants' samples were presented to four dogs across 36 sessions (16, 11, 7 and 2 sessions, respectively). Each session consisted of 10 Phase One training trials and 20 Phase Two discrimination trials. In Phase One, the dog was presented with a participant's stress sample (taken immediately post-task) alongside two blanks (the sample materials without breath or sweat), and was required to identify the stress sample with an alert behaviour. In Phase Two, the dog was presented with the stress sample, the same participant's baseline sample (taken pre-task), and a blank. Which sample (blank, baseline, or stress) the dog performed their alert behaviour on was measured. If dogs can correctly alert on the stress sample in Phase Two (when the baseline sample was present), it suggests that baseline and stress odours are distinguishable. Performance ranged from 90.00% to 96.88% accuracy with a combined accuracy of 93.75% (N trials = 720). A binomial test (where probability of success on a single trial was 0.33, and alpha was 0.05) showed that the proportion of correct trials was greater than that expected by chance (p < 0.001). Results indicate that the physiological processes associated with an acute psychological stress response produce changes in the volatile organic compounds emanating from breath and/or sweat that are detectable to dogs. These results add to our understanding of human-dog relationships and could have applications to Emotional Support and Post Traumatic Stress Disorder (PTSD) service dogs.

Don't drink and drive, it's a prime: Cognitive effects of priming alcohol-congruent and incongruent goals among heavy versus light drinkers.

The present experiment assessed implicit alcohol motivations and explicit alcohol expectancies following the interaction between alcohol-congruent (i.e. social drinking) versus incongruent (i.e. driving safety) goal primes and recent drinking habits among college students (n = 176). Heavy drinkers exhibited greater implicit alcohol approach and explicit tension reduction expectancies following social goal primes, while displaying greater implicit alcohol avoidance and explicit cognitive and behavioural impairment expectancies after driving safety goal primes. These findings indicate recent drinking habits interact with goal salience to influence explicit and implicit responses to alcohol, which has implications for the development of interventions to reduce college drinking.

Gender inequality in academia: Problems and solutions for women faculty in STEM.

Recently there is widespread interest in women's underrepresentation in science, technology, engineering, and mathematics (STEM); however, progress toward gender equality in these fields is slow. More alarmingly, these gender disparities worsen when examining women's representation within STEM departments in academia. While the number of women receiving postgraduate degrees has increased in recent years, the number of women in STEM faculty positions remains largely unchanged. One explanation for this lack of progress toward gender parity is negative and pervasive gender stereotypes, which may facilitate hiring discrimination and reduce opportunities for women's career advancement. Women in STEM also have lower social capital (e.g., support networks), limiting women's opportunities to earn tenure and learn about grant funding mechanisms. Women faculty in STEM may also perceive their academic climate as unwelcoming and threatening, and report hostility and uncomfortable tensions in their work environments, such as sexual harassment and discrimination. Merely the presence of gender-biased cues in physical spaces targeted toward men (e.g., "geeky" décor) can foster a sense of not belonging in STEM. We describe the following three factors that likely contribute to gender inequalities and women's departure from academic STEM fields: (a) numeric underrepresentation and stereotypes, (b) lack of supportive social networks, and (c) chilly academic climates. We discuss potential solutions for these problems, focusing on National Science Foundation-funded ADVANCE organizational change interventions that target (a) recruiting diverse applicants (e.g., training search committees), (b) mentoring, networking, and professional development (e.g., promoting women faculty networks); and (c) improving academic climate (e.g., educating male faculty on gender bias).

Not by associations alone: The role of contextual factors, individual differences, and propositional learning in the malleability of implicit alcohol attitudes.

Alcohol attitudes predict unique variance in drinking behavior and have been the target of manipulations and interventions to reduce high-risk alcohol use among youth and adults. However, whether these manipulations create long-lasting changes in alcohol-related attitudes and drinking behavior is unclear. The current mini-review focuses on evaluative conditioning (EC), a manipulation which pairs alcohol-related stimuli repeatedly with affectively valanced stimuli to create new semantic associations in memory; such associations underlie reflexive or impulsive behaviors like high-risk alcohol use. Across experimental studies, EC has been shown to promote negative alcohol attitudes and reduce alcohol consumption. However, recent evidence suggests the effectiveness of EC may depend on the depth of learning facilitated during the task, which may strengthen the semantic associations through propositional learning. While researchers have experimentally promoted greater depth of learning through the manipulation of contextual factors, we review evidence that alcohol-related individual differences also impact the effectiveness of alcohol EC, particularly when these factors are explicitly linked to the stimuli used during the manipulation. This review provides future directions for researchers and practitioners aiming to shape alcohol-related attitudes and behaviors. Specifically, the malleability of alcohol-related attitudes may depend on propositional learning facilitated by contextual and individual factors. Researchers and practitioners should incorporate these factors into interventions like EC aiming to reduce high-risk alcohol consumption.

I'm tired and feel like drinking: Viewing alcohol cues after exerting self-control increases approach motivation among individuals lower in alcohol sensitivity.

Exerting self-control depletes capacity for future self-control, which can promote greater alcohol use. However, certain populations may be more susceptible to these effects of depleted self-control capacity. For example, individuals with lower alcohol sensitivity (i.e., requiring more drinks to experience the effects of alcohol) are a high-risk group who are likely to engage in hazardous alcohol use and develop an alcohol use disorder. Those lower in alcohol sensitivity also exhibit heightened motivational reactivity in response to alcohol-related cues, which may be enhanced following exertion of self-control. However, whether drinkers lower in alcohol sensitivity are at higher risk for exhibiting greater motivations toward alcohol-related cues after exerting self-control is unclear. The current research examined the role of alcohol sensitivity in predicting approach motivation following exertion of self-control. It was expected drinkers exerting self-control would exhibit greater orientation toward rewarding cues, particularly after viewing alcohol-related cues. However, we predicted this pattern would be most prominent among drinkers lower in alcohol sensitivity. Experiment 1 supported these hypotheses, with lower alcohol sensitivity predicting greater approach motivation among drinkers required to exert self-control prior to viewing alcohol-related compared to neutral cues. Experiment 2 aimed to replicate these findings by assessing asymmetrical frontal cortical activation, an index of approach motivation. Drinkers with lower alcohol sensitivity exhibited greater relative left frontal cortical activation, consistent with approach motivation, while viewing alcohol-related cues following exertion of self-control. Results have implications for interventions aimed at identifying those at risk for greater alcohol motivations during states of mental exhaustion. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

Of two minds about alcohol: Specific effects of evaluative conditioning on implicit, but not explicit, alcohol cognitions among heavy versus light drinkers.

Heavy episodic drinking (HED) is a dangerous and pervasive problem in college populations. Two experiments examined the asymmetric effects of evaluative conditioning (EC) on cognitions underlying HED in a nonclinical, student sample. Based on the associative-propositional evaluation (APE) model, we predicted that negative EC would result in stronger implicit alcohol avoidance motivation compared to neutral EC but would not impact explicit alcohol expectancies; further, we hypothesized stronger negative EC effects among students reporting HED compared to light drinkers. Experiment 1 supported these hypotheses. In Experiment 2, participants were required to focus on either feelings or knowledge about alcohol following EC. Replicating Experiment 1, negative EC was effective in promoting implicit alcohol avoidance motivation among students reporting HED compared to neutral EC, whereas no differences in explicit alcohol expectations or urges emerged. However, greater implicit alcohol avoidance predicted lower explicit alcohol urges among participants instructed to focus on alcohol-related feelings, but not alcohol-related knowledge, regardless of condition. Findings suggest students reporting HED, but not light drinkers, may exhibit implicit alcohol avoidance following negative EC and that instructions to focus on alcohol-related feelings may align explicit and implicit responses. Results have implications for interventions aimed at retraining implicit alcohol cognitions among college students. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

In the eye of the drinker: Drinking motives influence the effectiveness of conditioning implicit alcohol attitudes.

Risky alcohol use is prevalent among college students. Pre-intervention research has established methods of influencing alcohol cognition and reducing short-term alcohol consumption among students using evaluative conditioning (EC), repeatedly pairing alcohol with emotionally valenced images. Specifically, negative EC promotes negative attitudes toward alcohol, but additional research is needed to understand the range of EC effects and conditions under which it is or is not effective. For example, whether pairing alcohol with positive images promotes positive alcohol attitudes has not been tested. Further, drinking motives may influence the effectiveness of conditioning alcohol attitudes, since these motives are strongly associated with emotional stimuli like those presented in EC. The current experiment tested the interaction of drinking motives (coping and enhancement) and EC valence (negative or positive) on implicit alcohol avoidance. Participants (N = 95) were undergraduate students reporting active alcohol use. Results indicated no main effect of EC condition on implicit alcohol avoidance. However, drinking motives interacted with EC procedures assigned to participants. Those reporting greater coping motives exhibited less implicit alcohol avoidance following negative EC, whereas those reporting greater enhancement motives exhibited less alcohol avoidance following positive EC. Findings indicate drinking motives may influence the effectiveness of EC for altering alcohol attitudes. Negative EC did not promote alcohol avoidance among college students reporting higher coping motives, and positive EC only reduced avoidance among students reporting higher enhancement motives. These results indicate drinking motives interact with situational cues to impact both positive and negative responses to alcohol.