A technique is described that allows the staining and subsequent visualization of polymers that contain the phosphorylcholine (PC) group. These materials are useful as bulk materials or coatings for the fabrication of medical devices. The staining method employs rhodamine 6G, which can be simply and rapidly applied to the polymer coating and imaged using fluorescence microscopy. The specificity of the staining for the PC polymers makes this technique suitable for the evaluation of a wide range of substrates and provides qualitative information on coating uniformity, coverage and morphology. It can be used to examine the durability of, and defects in, the coating. Statistical analysis of the fluorescent intensity by measuring the pixel value during imaging can allow for the method to be used as a quality control tool.

The effect of changes in information load on response rate and its components in complex decision-making was investigated. Data were collected in a simulated decision-making environment permitting both integrated and unintegrated decision-making responses. It was found that (1) strategic integrated decision-making first increases, then decreases with increasing information load; (2) general unintegrated decision-making first decreases, then increases with increasing information load; and (3) simple retaliatory decision-making increases with increasing information load. Total decision-making response rate generally follows the ascending input-output rate curve which has been established for a number of information-processing organisms.

: An alternate is presented to the sentence completion test, which was specifically designed to measure one kind of complexity only: perceptual social complexity. This measure is called the Impression Formation Test. In its original form it was first proposed by Streufert and Schroder (1963), but has since undergone considerable alteration in both administration and analysis. (Author)

An experimental simulation is described as a method for measurement of integration and response patterning in group decision making and strategic perception The method employs a simulated game including tactical, negotiation, economic, intelligence, and other potential components. Similarities to a previously described game as well as the advantages over that game are discussed.

An experimental simulation is described as a prototype for research concerned with the analysis of human information processing characteristics in complex environments. The method employs a simulated war game environment which lends itself to the analysis of performance and perceptual characteristics of individuals and social groups. Suggestions for procedures, space requirements and measurement techniques are included.