Multilevel modeling: current and future applications in personality research

Traditional statistical analyses can be compromised when data are collected from groups or multiple observations are collected from individuals. We present an introduction to multilevel models designed to address dependency in data. We review current use of multilevel modeling in 3 personality journals showing use concentrated in the 2 areas of experience sampling and longitudinal growth. Using an empirical example, we illustrate specification and interpretation of the results of series of models as predictor variables are introduced at Levels 1 and 2. Attention is given to possible trends and cycles in longitudinal data and to different forms of centering. We consider issues that may arise in estimation, model comparison, model evaluation, and data evaluation (outliers), highlighting similarities to and differences from standard regression approaches. Finally, we consider newer developments, including 3-level models, cross-classified models, nonstandard (limited) dependent variables, multilevel structural equation modeling, and nonlinear growth. Multilevel approaches both address traditional problems of dependency in data and provide personality researchers with the opportunity to ask new questions of their data.     

Postural Asymmetries in Response to Holding Evenly and Unevenly Distributed Loads During Self-Selected Stance

The authors examined postural asymmetries during quiet stance and while holding evenly or unevenly distributed loads. Right-hand dominant subjects preferentially loaded their right lower limb when holding no load or a load evenly distributed in both hands, but no differences in center of pressure (CoP) were observed between the left and right limbs. However, longer CoP displacement was observed under the preferentially loaded limb, which may reflect a functional asymmetry that allows quick movement of one limb in response to a potential perturbation. When a load was held only in the nondominant hand, sample entropy decreased in the left (loaded) limb but increased in the right (unloaded) limb, suggesting the unloaded foot compensated for a loss of control flexibility in the loaded foot.     

Ethics of Ambiguity and Irony: Jacques Derrida and Richard Rorty

This paper examines the relation or, more precisely, tension between postmodern deconstruction and ethics by elaborating upon the ethico-political dimensions of deconstructionism. It embarks on a critical assessment of postmodern discourse on ethics in view of its political implications by analyzing Jacques Derrida's and Richard Rorty's arguments with an assumption that their positions represent a certain logic in the postmodern discourse on ethics. Postmodern ethics is based on incredulity with regard to traditional metanarratives, and it defines ethics in terms of sensitivity or responsibility to otherness and difference. Its proponents believe that the negation of modern metanarratives opens a way to the Other which has been marginalized and suppressed both in thought and in social practice. Derrida and Rorty represent this position with their emphasis on the ethical nature of deconstruction and the need to elaborate new languages for ethics. Despite postmodern appeal to ethics of this sort, however, postmodern thinking shows its limits in dealing with most ethical-political matters in the contemporary world. The postmodern approach to ethics, being restricted within the perspective of the individual, does not provide any determinate framework for deciding how to adjudicate conflicting ethical claims or how to link the unconditional affirmation of emancipatory ideals, enlightened social criticism, and democratic accountability in determinate political terms. In the main, this paper contends that philosophical deconstruction and responsibility to otherness undermine each other in the public sphere.     

Messianism and Kingship in the Gospel of John: A Comparison Between the Fourth Gospel and the Royal Psalms 2, 72, and 110

The article shows that messianism and kingship in the Gospel of John are involved in the royal psalms, such as Psalms 2, 72, and 110. Although these psalms were never quoted in the Gospel of John, there is a strong likelihood that the royal psalms have been alluded in the Gospel of John. This article examines the similarities and differences between the royal psalms and the Gospel of John, and, thus, shows how each present the messiah as the ideal king, concentrating on the terms “the Son of God,” “the Son of man,” and “the kingdom of God” that John shares with the royal psalms in terms of the messianic views. It appears that John uses the terms, in a unique way to emphasize the divine aspect of the messiah, by putting weight on the main characteristics of the messiah as the ideal king who was pre-existent before creation.     

Word‐of‐mouth transmission in settings with multiple opinions: The impact of other opinions on WOM likelihood and valence

Scholars in social psychology and marketing have traditionally examined word-of-mouth (WOM) interactions in a dyadic setting, comprised of a WOM-opinion provider and its recipient. Yet, social interactions also often occur in larger settings, and group-based research has shown group sizes to affect its member behavior. To this end, we set out to examine WOM transmission in a larger context by introducing a WOM responder, whose role is to provide a second opinion to the WOM recipient. In Experiment 1, we find that social relations in the triad play a key role in WOM transmission. For strong ties, the WOM responder showed little difference in willingness to offer a second opinion irrespective of its congruency with the first opinion. Incongruency with the first opinion, however, reduced the valence of the second opinion. For weak ties, the presence (vs. absence) of first opinion—irrespective of its congruency—increased the likelihood of offering a second opinion and also its valence. We demonstrate that the effects could be attributable to different accessibility of needs for assimilation and differentiation as well as of motivational orientations toward other parties of WOM. Experiment 2 takes a closer look at the conflicting motivations of social influence (normative vs. informational) associated with strong ties, and finds both in operation but to a differing degree. Finally, a follow-up study addresses the current findings in the context of satisfied/dissatisfied consumers.     

Children’s Responses to Computer‐Synthesized Speech in Educational Media: Gender Consistency and Gender Similarity Effects

This study examines children’s social responses to gender cues in synthesized speech in a computer‐based instruction setting. Eighty 5th‐grade elementary school children were randomly assigned to one of the conditions in a full‐factorial 2 (participant gender) × 2 (voice gender) × 2 (content gender) experiment. Results show that children apply gender‐based social rules to synthesized speech. More specifically, children evaluate synthesized speech more positively, trust the speech more, and learn more effectively when voice gender matches either content gender (consistency attraction) and/or their own gender (similarity attraction). Children’s computer self‐efficacy was a significant covariate for their social responses to synthesized speech. Theoretical and practical implications of the current study for the design of educational media are discussed.     

Looking Again, and Harder, for a Link Between Low Self-Esteem and Aggression

ABSTRACT Recent field studies have revived the hypothesis that low self-esteem causes aggression. Accordingly, we reanalyzed the data from a previous experiment and conducted a new experiment to study direct physical aggression in the form of blasting a fellow participant with aversive noise. We also conducted a field study using a measure of indirect aggression in the form of a consequential negative evaluation. High narcissists were more aggressive than others but only when provoked by insult or humiliation and only toward the source of criticism. The combination of high self-esteem and high narcissism produced the highest levels of aggression. These results support the view of aggression as stemming from threatened egotism and are inconsistent with the hypothesis that low self-esteem causes either direct or indirect aggression.     

The ameliorating effect of oroxylin A on scopolamine-induced memory impairment in mice

Oroxylin A is a flavonoid and was originally isolated from the root of Scutellaria baicalensis Georgi., one of the most important medicinal herbs in traditional Chinese medicine. The aim of this study was to investigate the ameliorating effects of oroxylin A on memory impairment using the passive avoidance test, the Y-maze test, and the Morris water maze test in mice. Drug-induced amnesia was induced by administering scopolamine (1 mg/kg, i.p.) or diazepam (1 mg/kg, i.p.). Oroxylin A (5 mg/kg) significantly reversed cognitive impairments in mice by passive avoidance and the Y-maze testing (P<.05). Oroxylin A also improved escape latencies in training trials and increased swimming times and distances within the target zone of the Morris water maze (P<.05). Moreover, the ameliorating effects of oroxylin A were antagonized by both muscimol and diazepam (0.25 mg/kg, i.p., respectively), which are GABA(A) receptor agonists. Furthermore, oroxylin A (100 microM) was found to inhibit GABA-induced inward Cl(-) current in a single cortical neuron. These results suggest that oroxylin A may be useful for the treatment of cognitive impairments induced by cholinergic dysfunction via the GABAergic nervous system.     

Dielectric behavior of aerosol-deposited Mn-modified PZT–PZN thick films

We report the dielectric and ferroelectric behavior of thick films, ～10 µm, synthesized by aerosol deposition. The base composition of the films was selected to be 0.9Pb(Zr_0.52Ti_0.48)O₃–0.1Pb(Zn_1/3Nb_2/3)O₃ (PZT–PZN), which was modified with Mn to 0.9Pb(Zr_0.52Ti_0.48)O₃–0.1Pb(Zn_1/3Nb_2/3) O₃–0.52 wt% MnO₂ (PZT–PZN–Mn) in order to induce hardening. The polarization dynamics of the synthesized films was modeled using the theory developed for magnetic glassy systems. It was found that the substitution of Mn significantly (1) enhances the relaxation time, (2) reduces the magnitude of dielectric constant and dielectric loss, and (3) enhances the internal bias field. The results indicate the presence of domain wall pinning by the formation of defect dipoles.     

Multiple Group Analysis in Multilevel Structural Equation Model Across Level 1 Groups

This article introduces and evaluates a procedure for conducting multiple group analysis in multilevel structural equation model across Level 1 groups (MG1-MSEM; Ryu, 2014). When group membership is at Level 1, multiple group analysis raises two issues that cannot be solved by a simple extension of the standard multiple group analysis in single-level structural equation model. First, the Level 2 data are not independent between Level 1 groups. Second, the standard procedure fails to take into account the dependency between members of different Level 1 groups within the same cluster. The MG1-MSEM approach provides solutions to these problems. In MG1-MSEM, the Level 1 mean structure is necessary to represent the differences between Level 1 groups within clusters. The Level 2 model is the same regardless of Level 1 group membership. A simulation study examined the performance of MUML (Muthén's maximum likelihood) estimation in MG1-MSEM. The MG1-MSEM approach is illustrated for both a multilevel path model and a multilevel factor model using empirical data sets.