The Circadian Response of Intrinsically Photosensitive Retinal Ganglion Cells

Intrinsically photosensitive retinal ganglion cells (ipRGC) signal environmental light level to the central circadian clock and contribute to the pupil light reflex. It is unknown if ipRGC activity is subject to extrinsic (central) or intrinsic (retinal) network-mediated circadian modulation during light entrainment and phase shifting. Eleven younger persons (18–30 years) with no ophthalmological, medical or sleep disorders participated. The activity of the inner (ipRGC) and outer retina (cone photoreceptors) was assessed hourly using the pupil light reflex during a 24 h period of constant environmental illumination (10 lux). Exogenous circadian cues of activity, sleep, posture, caffeine, ambient temperature, caloric intake and ambient illumination were controlled. Dim-light melatonin onset (DLMO) was determined from salivary melatonin assay at hourly intervals, and participant melatonin onset values were set to 14 h to adjust clock time to circadian time. Here we demonstrate in humans that the ipRGC controlled post-illumination pupil response has a circadian rhythm independent of external light cues. This circadian variation precedes melatonin onset and the minimum ipRGC driven pupil response occurs post melatonin onset. Outer retinal photoreceptor contributions to the inner retinal ipRGC driven post-illumination pupil response also show circadian variation whereas direct outer retinal cone inputs to the pupil light reflex do not, indicating that intrinsically photosensitive (melanopsin) retinal ganglion cells mediate this circadian variation

Everyday antiracism in interpersonal contexts : constraining and facilitating factors for 'speaking up' against racism

Everyday conversations among non-Indigenous Australians are a significant site in which racism towards Indigenous Australians is reproduced and maintained. This study explores the possibilities of everyday antiracism by asking how people negotiate racist discourses in interpersonal contexts. Twelve first year psychology students (10 female, 2 male, aged 18–50) who had completed a compulsory Indigenous studies course were recruited as participants. Semi-structured interviews were thematically analysed for the constraints and facilitators for responding to racism in everyday contexts. As constraints against speaking up, participants offered ‘social expectations to fit in’, ‘fear of provoking aggression and conflict’, assessments of ‘the type of relationship’, whether they ‘could make a difference’ and the ‘type of racism’. As a facilitator for speaking up, participants reported they were confident in challenging erroneous statements when they felt well informed and authoritative about the facts. The research suggests that everyday antiracism requires a preparedness to deal with possible discomfort and ‘bad feeling’ which participants reported avoiding. The paper concludes with suggestions for stimulating critical thinking and intergroup dialogue in relation to everyday antiracism

Interdisciplinarity and undergraduate psychology education

This work identifies the human service sector as an important and growing destination for psychology graduates. It further identifies a number of key themes which flow from that observation and which are important to configuring psychology education in a way which takes account of emerging trends. The major theme identified in the research is the importance of breadth. The theme of the importance of breadth takes two related and repeated forms. The first is that graduates need to be thinkers rather than doers. The second is that employers in the human services stress the need for broad-based thinking and analytical skills to reflect social and contextual awareness of therapeutic situations and human service programmes and interventions. Stakeholders broadly commented that graduates seeking employment in the human service sector need upskilling in terms of a contextual awareness of the ‘real world’. One idea which emerged in this research is that real-world multidisciplinarity is best underpinned by an interdisciplinary approach to teaching and learning.Ian Goodwin-Smith, Elissa Pearson, Rob Ranzijn, Alan Campbell, Kurt Lushingto

Everyday antiracism in interpersonal contexts : constraining and facilitating factors for 'speaking up' against racism

Everyday conversations among non-Indigenous Australians are a significant site in which racism towards Indigenous Australians is reproduced and maintained. This study explores the possibilities of everyday antiracism by asking how people negotiate racist discourses in interpersonal contexts. Twelve first year psychology students (10 female, 2 male, aged 18–50) who had completed a compulsory Indigenous studies course were recruited as participants. Semi-structured interviews were thematically analysed for the constraints and facilitators for responding to racism in everyday contexts. As constraints against speaking up, participants offered ‘social expectations to fit in’, ‘fear of provoking aggression and conflict’, assessments of ‘the type of relationship’, whether they ‘could make a difference’ and the ‘type of racism’. As a facilitator for speaking up, participants reported they were confident in challenging erroneous statements when they felt well informed and authoritative about the facts. The research suggests that everyday antiracism requires a preparedness to deal with possible discomfort and ‘bad feeling’ which participants reported avoiding. The paper concludes with suggestions for stimulating critical thinking and intergroup dialogue in relation to everyday antiracism

Strengthening teaching and learning in psychology by looking beyond disciplinary boundaries: a case study from the University of South Australia

Elissa Pearson, Rob Ranzijn, Ian Goodwin-Smith, Alan Campbell, Renae Hayward and Gail Jackmanhttp://trove.nla.gov.au/version/17742960