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<jats:p> Coding competencies from behavioral-event interviews according to the principles of a new approach to assessment (McClelland, 1973) produces assessments that are reliable and validly associated with success as an executive. These assessments are not influenced by length of protocol or by performance in the preceding year. Bias is not a problem if both the interviewer and the coder are blind to executive success. In contrast to a traditional psychometric approach based on regression analysis, an algorithm based on competency scores predicted managerial success and improved performance across a number of samples. This algorithm identified potential outstanding performers as individuals whose scores reached designated tipping points within clusters of substitutable competencies. Experts' judgments of competencies needed or shown by executives in various positions agreed only moderately with competencies shown to be important by the data from behavioral-event interviews. </jats:p>

<jats:p> Young children learn language at an incredible rate. Although children come prepared with powerful statistical-learning mechanisms, the statistics they encounter are also prepared for them: Children learn from caregivers motivated to communicate with them. How precisely do parents tune their speech to their children’s individual language knowledge? To answer this question, we asked parent–child pairs ( N = 41) to play a reference game in which the parents’ goal was to guide their child to select a target animal from a set of three. Parents fine-tuned their referring expressions to their children’s knowledge at the lexical level, producing more informative references for animals they thought their children did not know. Further, parents learned about their children’s knowledge over the course of the game and tuned their referring expressions accordingly. Child-directed speech may thus support children’s learning not because it is uniformly simplified but because it is tuned to individual children’s language development. </jats:p>