Childhood anxiety and attention to emotion faces in a modified stroop task

This study used an emotional face stroop task to investigate the effects of self‐report trait anxiety, social concern (SC), and chronological age (CA) on reaction time to match coloured outlines of angry, happy, and neutral faces (and control faces with scrambled features) with coloured buttons in a community sample of 74 children aged 6 –12 years. The results showed an interference of colour matching for angry (relative to neutral) faces in children with elevated SC. The same effect was not found for happy or control faces. In addition, the results suggest that selective attention to angry faces in children with social concern (SC) was not significantly moderated by age.     

Some preliminary postulates on stimulus-perception,and consequent probability distributions for behavior

A stimulus (or stimulus-complex) is pictured as giving rise to a random series of sensory nerve pulses, which manifest themselves in contractions of individual muscle fibers. Assuming the expected time-frequency of these pulses to be proportional to the intensity of the stimulus, probability distributions are computed representing the cumulative effect of these pulses on the state of the organism, that is, on its degree ofawareness of the stimulus. Preliminary results suggest a modification of the Weber-Fechner formula for intensity discrimination for certain types of stimuli: the psychological scale to be measured byI ⁱ instead of logI.Contributions from the Scripps Institution of Oceanography, New Series, No. 54.