Peter D. Harms

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Over-claiming is a concrete operalization of self-enhancement based on respondents' ratings of their knowledge of various persons, events, products, and so on. Because 20% of the items are nonexistent, responses can be analyzed with signal detection formulas to index both response bias (over-claiming) and accuracy (knowledge). Study 1 demonstrated(More)
The design of a microbioreactor is described. An optical sensing system was used for continuous measurements of pH, dissolved oxygen, and optical density in a 2 mL working volume. The K(L)a of the microbioreactor was evaluated under different conditions. An Escherichia coli fermentation in both the microbioreactor and a standard 1 L bioreactor showed(More)
The overclaiming technique requires respondents to rate their familiarity with a list of general knowledge items (persons, places, things). Because 20% of the items are foils (i.e., do not exist), the response pattern can be analyzed with signal detection methods to yield the accuracy and bias scores for each respondent. In Study 1, the accuracy index(More)
Past empirical studies relating narcissism to leadership have offered mixed results. This study integrates prior research findings via meta-analysis to make four contributions to theory on narcissism and leadership, by (a) distinguishing between leadership emergence and leadership effectiveness, to reveal that narcissism displays a positive relationship(More)
Prior research has demonstrated that attachment styles are important antecedents of interpersonal relationship quality and psychological well-being. Despite this, the theory of attachment styles has been largely ignored by researchers interested in workplace phenomena. The present paper aims to explain the theory of attachment styles, why researchers have(More)
The continuity and change of the needs and evaluations of the college environment and person-environment fit (PE fit) with the college environment were studied in a 4-year longitudinal study of students (N = 191). Perceptions of the environment changed more dramatically than corresponding self-perceived needs. PE fit demonstrated moderate levels of(More)
Electrochemical sensors for pH and dissolved oxygen remain the most commonly used in bioprocess monitoring, but continued research has resulted in improved optical sensors. Optical sensors for dissolved oxygen and dissolved carbon dioxide are now commercially available. Advances in optics and electronics are further driving down the costs of these sensors.(More)
Shake flasks are ubiquitous in cell culture and fermentation. However, conventional devices for measuring oxygen concentrations are impractical in these systems. Thus, there is no definitive information on the oxygen supply of growing cells. Here we report the noninvasive, nonintrusive monitoring of dissolved oxygen (DO) in shake flasks using a low-cost(More)
Researchers often use very abbreviated (e.g., 1-item, 2-item) measures of personality traits due to their convenience and ease of use as well as the belief that such measures can adequately capture an individual's personality. Using data from 2 samples (N = 437 employees, N = 355 college students), we show that this practice, particularly the use of(More)
Two prototype 24-unit microbioreactors are presented and reviewed for their relative merits. The first used a standard 24-well plate as the template, while the second consisted of 24-discrete units. Both systems used non-invasive optical sensors to monitor pH and dissolved oxygen. The systems were used to cultivate Escherichia coli. Both designs had their(More)