Lots of Target Variance: An update of SRM using the HEXACO Personality Inventory

According to previous studies based on the Social Relations Model (SRM), most of the variance in observer reports of personality is perceiver and relationship variance, and not much is target variance. However, most SRM studies have employed short adjective scales instead of personality questionnaires. Results based on the HEXACO-PI-R in family and work groups showed high levels of consensus (target variance) and self-other agreement for all traits and, except for Honesty-Humility and Openness to Experience, low levels of generalized rater bias (perceiver variance) and of assumed similarity. Additionally, intraclass correlations suggested a 'group personality' for some traits. The findings suggest that the use of personality questionnaires in Social Relations Analyses may promote higher estimates of consensus in personality judgments. Copyright © 2010 John Wiley & Sons, Ltd

On charisma and need for leadership

Some scholars have argued and found that the relationship between transformational leadership and outcomes can be moderated by subordinate or situational characteristics (e.g. Bass and Avolio, 1990; Podsakoff, MacKenzie, and Bommer, 1995). Still, there is insufficient evidence on this issue. In this paper we examine need for leadership (De Vries, 1997) as a moderator of the relation between a measure for charismatic leadership (Bass, 1985a; Den Hartog, Koopman & Van Muijen, 1994) and subordinate outcomes. Need for leadership is found to moderate the relation between charismatic leadership and three out of four criteria. Furthermore, we examine the relation between charismatic leadership and need for leadership. While it has been asserted that transformational leaders are able to empower and develop subordinates to become leaders themselves (e.g. Bass and Avolio, 1990; Kuhnert, 1994; Yammarino, 1994) we find a positive relationship between charismatic leadership and need for leadership, which suggests that subordinates are more, instead of less, dependent when a charismatic leader is present.leadership;character trait

The Hexaco and 5DPT models of personality: a comparison and their relationships with psychopathy, egoism, pretentiousness, immorality and machaivallianism.

This study describes and tests two models of personality: the HEXACO model of personality, which is derived from the lexical tradition and which is rooted In "normal" psychology, and the 5DPT model of personality, which is derived from a theoretical approach and which is rooted in clinical psychology. The HEXACO and 5DPT models are compared In the prediction of antisocial and self-benefiting personality traits in a large-scale community sample study. Relative weight analyses show that HEXACO Honesty-Humility explains most of the variance in SRP-III Psychopathy, Egoism, and IPIP Pretentiousness, Immorality, and Machiavellianism. Additionally, Honesty-Humility is able to Increment the amount of variance explained by the 5DPT scales in these antisocial and self-benefiting personality scales. Consequences for the 5DPT and for the choice of a dimensional axis-II personality model in the run-up of the DSM-V are discussed. © 2010 The Guilford Press

Traits and states: Integrating personality and affect into a model of criminal decision making

We propose and test a model of criminal decision making that integrates the individual differences perspective with research and theorizing on proximal factors. The individual differences perspective is operationalized using the recent HEXACO personality structure. This structure incorporates the main personality traits, but it carries the advantage of also incorporating Self-Control within its personality sphere, and an additional trait termed Honesty-Humility. Furthermore, the model offers a new perspective on proximal predictors, "states," of criminal decisions by adding affect (i.e., feelings) to the rational choice-crime equation. The proposed model is tested using scenario data from a representative sample of the Dutch population in terms of gender, age, education level, and province (N = 495). As predicted by the model, personality was both directly and indirectly related to criminal decision making. Specifically, the traits Emotionality, Self-Control, and Honesty-Humility were mediated by both affect and rational choice variables. Conscientiousness operated only indirectly on criminal decision making via rational choice. Together, the findings support a trait-state model of criminal decision making. © 2012 American Society of Criminology

Immunological and Physiological Differences Between Layer- and Broiler Chickens after Concurrent Intratracheal Administration of Lipopolysaccharide and Human Serum Albumin

Layers and broilers were concurrently intratracheally challenged with 0.5 mg Lipopolysaccharide (LPS) and 0.1 mg Human Serum Albumin (HuSA) at 3 weeks of age. Specific total and isotype-specific (IgM, IgG, IgA) Antibody (Ab) responses to HuSA during 3 weeks following immunization, cellular in vitro mitogen responses to Concanavalin A (Con A) and specific cellular responses in vitro to different dosages of HuSA, blood serotonin (5-HT) levels, plasma Corticosterone (CORT) levels at 6 weeks of age and ex vivo nitric oxide (NO) production in the presence of LPS, respectively, were measured in all birds. Higher in vitro cellular responses to HuSA, but not Con A, were found in the broilers than in the layers. Also higher total, IgM and IgG antibody responses to HuSA were found in the broilers. Higher ex vivo NO production was found in the layers. A heavier spleen weight was found in the broilers, but relative spleen weight was higher in the layers. The broilers grew much heavier and also maintained a higher growth during the first 24 and 48 h after i.t. challenge with LPS and HuSA. No breed effect was found for body temperature responses after i.t. challenge. Blood 5-HT levels and plasma CORT levels were significantly higher in the layers. Number and type of significant correlations between 5-HT levels, cachectin response to LPS, antibody levels and cellular immunity differed between breeds. Our data suggest comparable immune responses to i.t. HuSA challenge in broilers and layers of similar age and confirm the earlier reported higher humoral immune response in broilers. On the other hand, the cachectin response to LPS differed between broilers and layers. Our results do not confirm the earlier reported higher cellular immune response of layers. Different significant relationships between physiological parameters in broilers and layers were found. Our results suggest that selection for enhanced growth does not necessarily affect specific immune competence of poultr

On charisma and need for leadership

Some scholars have argued and found that the relationship between transformational leadership and outcomes can be moderated by subordinate or situational characteristics (e.g. Bass and Avolio, 1990; Podsakoff, MacKenzie, and Bommer, 1995). Still, there is insufficient evidence on this issue. In this paper we examine need for leadership (De Vries, 1997) as a moderator of the relation between a measure for charismatic leadership (Bass, 1985a; Den Hartog, Koopman & Van Muijen, 1994) and subordinate outcomes. Need for leadership is found to moderate the relation between charismatic leadership and three out of four criteria. Furthermore, we examine the relation between charismatic leadership and need for leadership. While it has been asserted that transformational leaders are able to empower and develop subordinates to become leaders themselves (e.g. Bass and Avolio, 1990; Kuhnert, 1994; Yammarino, 1994) we find a positive relationship between charismatic leadership and need for leadership, which suggests that subordinates are more, instead of less, dependent when a charismatic leader is present.

Fundamentals of Providing Negotiation Advice Online:the Need for Developing BATNAs

However, in order to determine BATNAs online, we need a proper understanding of exactly what is a BATNA. This paper argues that current understanding of what comprises BATNAs is insufficient for the intended purposes.