Helen C. Johnson

Learn More
Subjects' awareness of motor corrections was investigated in a double-step pointing task. An unpredictable lateral target displacement of 10 cm, either left or right, during an ongoing reaching movement led to corrections of the trajectory. Subjects were required either to follow the target (pointing) or move in the opposite direction (anti-pointing). The(More)
In the wake of the neurobiological "revolution," do mental health professionals still assign etiological responsibility for emotional and behavioral disorders to deficient or harmful parenting? This study investigated differences in attributions of causality by theoretical orientation, professional discipline, areas of practice, familiarity with parent(More)
Attending to a cued location in space leads to faster reaction times when a stimulus is presented there. The reasons for this attentional effect, and its specific locus in the information-processing chain between stimulus and response, remain unclear. One suggestion is that attention speeds the conscious detection of stimuli. Surprisingly, this possibility(More)
Quantifying rates governing the clearance of Human Papillomavirus (HPV) and its progression to clinical disease, together with viral transmissibility and the duration of naturally-acquired immunity, is essential in estimating the impact of vaccination programmes and screening or testing regimes. However, the complex natural history of HPV makes this(More)
AIM Identification of relationships between participation, psycho-social adjustment and motor performance factors in boys with developmental coordination (DCD) using a classification and regression tree approach to determine patterns of potential vulnerability. METHODS A quantitative cross-sectional design investigating a cohort of 60 boys aged 10-13(More)
The effect of anxiety-reducing hypnotic training on learning and reading-comprehension tasks was examined. Fifteen college students who reported having test-taking anxiety were randomly assigned to an experimental or a control group. The experimental group received hypnotic training to reduce anxiety prior to taking a learning and reading-comprehension(More)
  • Km Mitchell, Hj Foss, Z Mukandavire, M Pickles, Williams, Johnson +35 others
  • 2016
(2014) Who mixes with whom among men who have sex with men? Implications for modelling the HIV epidemic in southern India. Journal of theoretical biology, 355. Different mixing scenarios are explored for 3 groups of role-segregated MSM. Models show that the mixing scenario affects both R 0 and endemic HIV prevalence. When models are fit to data, predicted(More)
  • 1