Servo control of behavior rhythms

A laboratory computer was used to implement a servo-control arrangement wherein environmental feedback to a behaving animal oscillates sinusoidally in real time. The location and period of behavior rhythms generated by the servo-control arrangement covary with the location and period of the sinusoidal command signal.     

Commentary on neoliberal ideology in work and organizational psychology

I welcome the paper on Neoliberal ideology in WOP as a valuable critique of Work and Organizational Psychology (WOP) encouraging practitioners and researchers to think carefully about what they are trying to achieve and how they make sense of the world of work.     

On the dynamics of work identity in atypical employment: setting out a research agenda

Starting from the notion that work is an important part of who we are, we extend existing theory making on the interplay of work and identity by applying them to (so called) atypical work situations. Without the contextual stability of a permanent organizational position, the question “who one is” will be more difficult to answer. At the same time, a stable occupational identity might provide an even more important orientation to one’s career attitudes and goals in atypical employment situations. So, although atypical employment might pose different challenges on identity, identity can still be a valid concept to assist the understanding of behaviour, attitudes, and well-being in these situations. Our analysis does not attempt to “reinvent” the concept of identity, but will elaborate how existing conceptualizations of identity as being a multiple (albeit perceived as singular), fluid (albeit perceived as stable), and actively forged (as well as passively influenced) construct that can be adapted to understand the effects of atypical employment contexts. Furthermore, we suggest three specific ways to understand the longitudinal dynamics of the interplay between atypical employment and identity over time: passive incremental, active incremental, and transformative change. We conclude with key learning points and outline a few practical recommendations for more research into identity as an explanatory mechanism for the effects of atypical employment situations.     

Anxiety Symptoms in African American Children: Relations with Ethnic Pride,Anxiety Sensitivity,and Parenting

This cross-sectional study examined the relations among children’s ethnic pride, perceived parenting behavior (i.e., parental control, parental acceptance), anxiety sensitivity, and child anxiety symptoms (i.e., physical symptoms, social anxiety symptoms, separation anxiety symptoms, and harm avoidance symptoms) in 266 African American school children (M = 9.98 years old; 55% girls). Structural equation modeling results indicated that high ethnic pride was associated with high parental acceptance. High perceived parental acceptance, in turn, was related to children reporting low levels of social anxiety symptoms and high levels of harm avoidance. In addition, high parental control was related to high anxiety sensitivity. Anxiety sensitivity partially mediated the relation between parental control and separation anxiety symptoms, such that parental control was both directly and indirectly related to separation anxiety symptoms. Parental control was indirectly related to physical symptoms, social anxiety symptoms, and harm avoidance symptoms through its direct link to anxiety sensitivity. The study’s results increment knowledge about factors influencing specific dimensions of anxiety in African American children.     

Prior experience modifies acquisition trajectories via response–strategy sampling

Animal Cognition - Few studies have considered how signal detection parameters evolve during acquisition periods. We addressed this gap by training mice with differential prior experience in a...     

Anxiety sensitivity and auditory perception of heartbeat

Anxiety sensitivity (AS) is the fear of sensations associated with autonomic arousal. AS has been associated with the development and maintenance of panic disorder. Given that panic patients often rate cardiac symptoms as the most fear-provoking feature of a panic attack, AS individuals may be especially responsive to cardiac stimuli. Consequently, we developed a signal-in-white-noise detection paradigm to examine the strategies that high and low AS individuals use to detect and discriminate normal and abnormal heartbeat sounds. Compared to low AS individuals, high AS individuals demonstrated a greater propensity to report the presence of normal, but not abnormal, heartbeat sounds. High and low AS individuals did not differ in their ability to perceive normal heartbeat sounds against a background of white noise; however, high AS individuals consistently demonstrated lower ability to discriminate abnormal heartbeats from background noise and between abnormal and normal heartbeats. AS was characterized by an elevated false alarm rate across all tasks. These results suggest that heartbeat sounds may be fear-relevant cues for AS individuals, and may affect their attention and perception in tasks involving threat signals.     

Seeing with the skin

A system for converting an optical image into a tactile display has been evaluated to see what promise it has as a visual substitution system. After surprisingly little training, Ss are able to recognize common objects and to describe their arrangement in three-dimensional space. When given control of the sensing and imaging device, a television camera, Ss quickly achieve external subjective localization of the percepts. Limitations of the system thus far appear to be more a function of display resolution than limitations of the skin as a receptor surface. The acquisition of skill with the device has been remarkably similar for blind and sighted Ss.