Sheeple? The need for more research on sheep cognition

Marino & Merskin (2019) provide a comprehensive review of the cognitive abilities of sheep. If research with other animals is any guide, there may be justification for the view that the abilities of sheep have been underestimated, and their review will likely stimulate more research into sheep cognition

A spoon full of studies helps the comparison go down: a comparative analysis of Tulving’s spoon test

Mental time travel refers to the ability to cast one’s mind back in time to re-experience a past event and forward in time to pre-experience events that may occur in the future. Endel Tulving (2005), an authority on mental time travel, holds that this ability is unique to humans. Anticipating that comparative psychologists would challenge this claim, Tulving (2005) proposed his spoon test, a test specifically designed to assess whether nonhuman animals are capable of mental time travel. A number of studies have now employed the spoon test to assess mental time travel in nonhuman animals. Here, we review the evidence for mental time travel in primates. To provide a benchmark, we also review studies that have employed the spoon test with preschool children. The review demonstrates that if we compare the performance of great apes to that of preschool children, and hold them to the same criteria, the data suggest mental travel is present but not ubiquitous in great apes

Very superstitious? A preliminary investigation of pigeons’ body position during a matching-to-sample task under differential and common outcome conditions.

The delayed matching-to-sample (DMS) task is widely employed to assess memory in a range of non-human animals. On the standard “common outcomes” (CO) DMS task, correct performance following either sample stimulus results in reinforcement. In contrast, on a “differential outcomes” (DO) DMS task, the outcome following either sample stimulus is different. One of the most consistent findings in the comparative literature is that performance under a DO condition is superior to that under a CO condition. The superior performance is attributed to the fact the DO condition enhances memory for the sample stimulus by tagging each sample with a discrete reward. Here, we investigate an alternative possibility, that pigeons use positional mediation during the delay under DO, but not CO, conditions. To test this, we tracked the head position of pigeons performing a DO (n = 4) or CO (n = 4) task. Consistent with the positional mediation account, all subjects in the DO condition displayed evidence of positional mediation. Surprisingly, positional mediation was not unique to subjects in the DO condition, with subjects in the CO condition also displaying evidence of mediation.&nbsp

How Well Does Psychological Research in Aotearoa New Zealand Reflect Diversity?

This paper presents our reflections as psychological researchers based on a content analysis of studies published in Journal of the New Zealand College of Clinical Psychologists and New Zealand Journal of Psychology over the last decade. We found the frequency of articles that had considered biculturalism, multiculturalism and diversity was related to the scope of the journal and the release of special issues on specific themes (e.g. Indigenous psychologies in 2017). Five issues were identified around the inclusion of cultural diversity in psychological research: inadequate data collection, controlling for diversity, no contextualisation of diversity, pathologisation of diversity and passing responsibility to others. Each issue was succinctly discussed with examples provided. Through this paper, we hope to open up a conversation on how psychological researchers can meet their ethical responsibility to Te Tiriti o Waitangi

University students’ opinions towards mobile sensing data collection: A qualitative analysis

mHealth researchers can now collect a wealth of data using “life tracking apps” (LTAs), which are smartphone applications that use mobile sensing to capture and summarise a multitude of data channels (e.g., location, movement, keyword use, sleep, exercise, and so on). The combined wealth of information can create digital signatures of individuals, which hold immense promise for mental health research and interventions by allowing new insights into moment-to-moment changes in behaviour and mental states. However, little is known about what a common research demographic (university students) thinks about these apps and what might factor into their decisions to participate in research using a LTA. This qualitative study ran five focus group sessions (21 students in total) to explore students’ experiences, beliefs, and opinions about LTAs to generate insights into what would make them more or less likely to participate in research involving LTAs. Transcripts were coded and examined for categories using qualitative content analysis. Important categories that emerged were privacy (although this varied based on the individual and data being collected), data security, inconvenience, intrusiveness, financial compensation, and the perceived nature of the research team responsible. On the basis of these categories, we derived seven key insights to increase student participation in research using LTAs: strengthen and communicate privacy and data security, design the app to be as convenient as possible to users, maximise passive data collection, think cautiously before tracking data perceived as “creepy” such as messages, offer suitable financial compensation, be transparent about goals and justification for data being collection to build trust, and attract participants by highlighting how the app can help them achieve their goals. With these insights, mHealth researchers can maximise their participant pool and improve this nascent and promising field

Brain Cells in the Avian ‘Prefrontal Cortex’ Code for Features of Slot-Machine-Like Gambling

Slot machines are the most common and addictive form of gambling. In the current study, we recorded from single neurons in the ‘prefrontal cortex’ of pigeons while they played a slot-machine-like task. We identified four categories of neurons that coded for different aspects of our slot-machine-like task. Reward-Proximity neurons showed a linear increase in activity as the opportunity for a reward drew near. I-Won neurons fired only when the fourth stimulus of a winning (four-of-a-kind) combination was displayed. I-Lost neurons changed their firing rate at the presentation of the first nonidentical stimulus, that is, when it was apparent that no reward was forthcoming. Finally, Near-Miss neurons also changed their activity the moment it was recognized that a reward was no longer available, but more importantly, the activity level was related to whether the trial contained one, two, or three identical stimuli prior to the display of the nonidentical stimulus. These findings not only add to recent neurophysiological research employing simulated gambling paradigms, but also add to research addressing the functional correspondence between the avian NCL and primate PFC

The Effect of a Food Addiction Explanation Model for Weight Control and Obesity on Weight Stigma

There is increasing scientific and public support for the notion that some foods may be addictive, and that poor weight control and obesity may, for some people, stem from having a food addiction. However, it remains unclear how a food addiction model (FAM) explanation for obesity and weight control will affect weight stigma. In two experiments (N = 530 and N = 690), we tested the effect of a food addiction explanation for obesity and weight control on weight stigma. In Experiment 1, participants who received a FAM explanation for weight control and obesity reported lower weight stigma scores (e.g., less dislike of 'fat people', and lower personal willpower blame) than those receiving an explanation emphasizing diet and exercise (F(4,525) = 7.675, p = 0.006; and F(4,525) = 5.393, p = 0.021, respectively). In Experiment 2, there was a significant group difference for the dislike of 'fat people' stigma measure (F(5,684) = 5.157, p = 0.006), but not for personal willpower weight stigma (F(5,684) = 0.217, p = 0.81). Participants receiving the diet and exercise explanation had greater dislike of 'fat people' than those in the FAM explanation and control group (p values 0.05). The FAM explanation for weight control and obesity did not increase weight stigma and resulted in lower stigma than the diet and exercise explanation that attributes obesity to personal control. The results highlight the importance of health messaging about the causes of obesity and the need for communications that do not exacerbate weight stigma

Express yourself? Ease to express one’s identity mediates the relationship between national belonging and mental health

A number of studies have reported a positive relationship between levels of national identification and well-being. Although this link is clear, the relationship is likely influenced by a number of other variables. In the current study, we examine two such variables: age and the ease with which people feel they can express their identity in the national context. Participants were drawn from three waves (2008–12) of the biannual New Zealand General Social Survey (NZGSS). The NZGSS consists of a number of questions related to well-being. The current study utilised the questions related to one’s sense of belonging to New Zealand, ease to express one’s identity in New Zealand, and mental health. When controlling for physical health, standard of living, and several demographic control variables, there was a clear relationship between one’s sense of belonging to New Zealand and mental health. Further, this relationship was stronger for older than younger participants. Finally, the ease with which participants felt they could express their identity in New Zealand partially mediated the relationship. Future research should elucidate which specific aspects of their identity people feel is constrained in the national context.A number of studies have reported a positive relationship between levels of national identification and well-being. Although this link is clear, the relationship is likely influenced by a number of other variables. In the current study, we examine two such variables: age and the ease with which people feel they can express their identity in the national context. Participants were drawn from three waves (2008-12) of the biannual New Zealand General Social Survey (NZGSS). The NZGSS consists of a number of questions related to well-being. The current study utilised the questions related to one's sense of belonging to New Zealand, ease to express one?s identity in New Zealand, and mental health. When controlling for physical health, standard of living, and several demographic control variables, there was a clear relationship between one?s sense of belonging to New Zealand and mental health. Further, this relationship was stronger for older than younger participants. Finally, the ease with which participants felt they could express their identity in New Zealand partially mediated the relationship. Future research should elucidate which specific aspects of their identity people feel is constrained in the national context.Publisher PDFPeer reviewe