Improving comprehension and communication of risks about health

Many patients have severe difficulties grasping several numerical concepts that are related to their health, such as, for instance, the risk of suffering various diseases. Visual aids have been proposed as a promising method for enhancing risk communication and comprehension. In medical practice, however, not all patients benefit from visual aids. In a study conducted on a probabilistic, representative national sample in the United States, we identified a group of patients for whom visual aids are most useful: Those who have low numeracy but high graphical literacy skills. These patients have high scores in three abilities involved in graph comprehension: (1) the ability to read the data, (2) the ability to read the relations between the data, and (3) the ability to read beyond the data. Our results can have important implications for medical practice and for risk communication about health.     

Are indigenous personality dimensions culture-specific? Mexican inventories and the Five-Factor Model

The universality versus cultural specificity of Mexican personality dimensions was investigated by examining: (a) the replicability of Mexican personality dimensions assessed by indigenous inventories; and (b) the extent to which Mexican dimensions are encompassed by the Five-Factor Model (FFM), one hypothesized universal model of personality structure. Mexican university students (N = 794) completed nine indigenous inventories and the Spanish version of the Revised NEO Personality Inventory. The FFM replicated well, although reliability was poor for a few facet scales. Reliability was acceptable for the indigenous Mexican scales. However, for most indigenous instruments, a cross-sample replication criterion suggested alternative structures of fewer, more replicable dimensions. Multiple regression and joint factor analyses revealed that most of the Mexican dimensions were well subsumed by the FFM. Thus, cultural differences did not involve clearly culture-specific dimensions, but more subtle differences in the salience or cultural flavor of particular traits.     

Simple mechanisms for gathering social information

Social contexts are notoriously complex, yet decisions are nevertheless made by using simple strategies. We argue that the concept of fast and frugal heuristics provides a promising framework for understanding how we gather social information to make decisions in social environments. That is, we assume that under limitations of time, energy, and computational resources people use cognitively based shortcuts that rely on information from social environments to solve different types of real problems. We review three successful applications of heuristics to the social arena. We first introduce some commonly faced social inference problems (e.g., selecting a mate or deciding whether to cooperate with someone) and then discuss how individuals can use simple strategies to solve such problems. For each problem, we consider how social environments are structured, and how we take advantage of this structure when using heuristics to make inferences and decisions.