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A looming paradigm was used to determine what depth information infants process in addition to that provided by the expansion of a single, closed contour of an object. A total of 18 male and 15 female infants aged 22-48 days watched a film in which the circular elements and inter-element spaces of the projected image alternately expanded and contracted. A display containing 800 black circles elicited significantly more head responses directed away from the screen than displays having either one or three circles of the same size. The differences were only found in the expansion trials. Infants thus processed depth information provided by the expanding spaces between elements or movement of the elements toward the peripheral visual field. The results were in agreement with Gibson's (1966, 1968) description of the adequate stimulus for perceived movement in depth. (Author/BRT)

The three or four months preceding March 1974, demonstrated there are things we can do individually and as a nation which will affect the number of highway accidents, the severity of injuries, and the number of deaths resulting from those accidents. The use of lap and shoulder belts, the lowering of maximum speed limits, and the decrease in total traffic volumes on streets and highways because of the fuel shortage have all helped reduce traffic accident statistics. Drunken driving, however, still poses a considerable hazard. The relationship between lowered drinking age and driving accidents involving youth has not been positively determined. It is known that young people are involved in more traffic accidents and more fatal accidents than their proportion of the driving population. The foremost reason for holding this conference is to explore ways young people can be involved and participate in planning and executing local and State safety programs. (A seven-page National Highway Traffic Safety Administration booklet for young drivers is included.) (AG)

From a technical point of view improvements of color picture tube could be regarded as having reached their limits. In this respect we have found that the mask focusing tube can achieve this objective when they are combined with the black matrix technique, the high performance gun, dot screen structure, high matrix transparency and large electrode diameter. Two fold improvements of brightness and contrast have been obtained with two fold mask transparency, 22% higher matrix transparency and mask-focusing. 20–30% less deflection power, 70% less mask doming also have been achieved with 110 degree 36.5 mm neck diameter and 1∶2 mask focusing voltage ratio. 20% less spot diameter and sharp beam distribution have been obtained by new multi-stage focusing electron gun and delta arrangement 36.5 mm neck diameter. [ABSTRACT FROM PUBLISHER]