Ingroup Favoritism and Outgroup Derogation: Effects of News Valence,Character Race,and Recipient Race on Selective News Reading

This study examined whether the positive or negative valence of a news story, and the race of the character portrayed in the story, would influence Black or White readers' selection of a story. The study employed selective exposure methodology to unobtrusively measure story selections among Black and White readers as they browsed a news site. The results demonstrated Black newsreaders were more likely to select and read positive and negative stories featuring their racial ingroup, and more likely to select and read negative vis‐à‐vis positive stories about their outgroup. In contrast, Whites' story preference was not affected by story valence or character race. Theoretical assumptions from social identity, social comparison, and social cognitive theories are used to explain the findings.     

The Role of Actors' Race in White Audiences' Selective Exposure to Movies

Movie producers are often reluctant to cast more than a few minority actors in otherwise race‐neutral movies for fear that the White audience will largely avoid such films. Two experiments were conducted to test the idea that the racial makeup of a cast could influence White audiences' selective exposure to movies. Results revealed that actors' race does influence selective exposure in certain contexts. For nonromantic movies, participants' racial attitudes moderated the relationship between race and selective exposure. For romantic movies, regardless of racial attitudes, White participants showed significantly less interest in seeing movies with mostly Black casts than in seeing movies with mostly White casts. These findings are discussed in light of both social identity theory and social cognitive theory.     

Media Violence and Children's ADHD‐Related Behaviors: A Genetic Susceptibility Perspective

This study examined the relationship between media violence exposure and Attention‐deficit/hyperactivity disorder (ADHD)‐related behaviors. Using survey (parent‐reported) and genetic data of 1,612 Dutch children (aged 5 to 9 years), we examined genetic disposition as a possible cause of individual differences in children's use of and susceptibility to media violence. The gene variant of interest was the 5‐HTTLPR polymorphism, which has been associated with ADHD‐related behaviors in previous research. Results showed that the “long” variant of the gene polymorphism was related to greater violent media use, which in turn was related to more ADHD‐related behaviors. The 5‐HTTLPR genotype did not moderate the effect of media violence on ADHD‐related behaviors. This study provides insight into the role of genetic factors in media effects.     

Some Dared Call It Torture: Cultural Resonance,Abu Ghraib,and a Selectively Echoing Press

This study draws upon research on “indexing” and “cascading activation” to explore U.S. political and news discourse surrounding the Abu Ghraib prison scandal. Specifically, we systematically analyze White House, military, congressional, and news messages. In so doing, we incorporate scholarship on social identity theory to suggest why news media challenge certain White House frames but uncritically echo others. Our data demonstrate that White House frames were consistently challenged by Democrats in the opposing party, but that these competing congressional messages were largely absent in news coverage. These results challenge previous research on news coverage of Abu Ghraib. We discuss how these patterns align with and expand Entman's cascading activation model of press‐state relations, and consider the implications for future scholarship.     

Polarization and Partisan Selective Exposure

Today, people can easily select media outlets sharing their political predispositions, a behavior known as partisan selective exposure. Additional research is needed, however, to better understand the causes and consequences of partisan selective exposure. This study investigates the relationship between partisan selective exposure and political polarization using data from the National Annenberg Election Survey. Cross‐sectional results show strong evidence that partisan selective exposure is related to polarization. Over‐time analyses document that partisan selective exposure leads to polarization. Some evidence supports the reverse causal direction, namely that polarization leads to partisan selective exposure. Implications for the study of media effects and normative implications—both positive and negative—are discussed.     

Please Your Self: Social Identity Effects on Selective Exposure to News About In‐ and Out‐Groups

Hypotheses were tested in a secondary data analysis of an experiment on selective exposure to positive and negative news articles about same‐ and differently aged individuals. A sample of 178 young (18–30 years) and 98 older adults (50–65 years) browsed an online news magazine while reading times were logged by software. Younger individuals (high status, high uncertainty) generally focused their reading on same‐aged individuals, with a preference on positive news about this in‐group. Older recipients (low‐status, low uncertainty) were more likely to select negative news about young individuals than positive news about this out‐group and negative news about older individuals. Furthermore, exposure to negative news about younger individuals bolstered older recipients' self‐esteem.     

Minimal exposure path algorithms for directional sensor networks

As a fundamental problem of wireless sensor networks, the minimal exposure path problem corresponding to the sensor network's worst‐case coverage plays an important role in the applications for detecting intrusions. However, most existing works about minimal exposure path are based on omnidirectional sensors. In contrast, this paper studies the minimal exposure path problem for two different types of directional sensing models: the binary sector model and directional sensitivity model. For the binary sector model, we construct a special Voronoi diagram, called sector centroids‐based Voronoi diagram, to transform the minimal exposure path problem from a continuous geometric problem into a discrete geometric problem. By using the sector centroids‐based Voronoi diagram, we develop an approximate algorithm to find the minimal exposure path in the sensors deployment field. For the directional sensitive model, we formulate the minimal exposure path problem by using two sensing intensity functions: all‐sensor intensity function and maximum‐sensor intensity function and then generate two weighted grids to convert the minimal exposure path problem into two discrete geometric problems. On the basis of the aforementioned weighted grids, we also develop two approximation algorithms to find the minimal exposure path for the directional sensitive model. We conduct extensive experiment simulations to validate and evaluate our proposed models and algorithms. Copyright © 2012 John Wiley & Sons, Ltd.     

The Relationship Between Message Recall and Persuasion: More Complex Than It Seems

A strong message recall‐attitude relationship was predicted when participants were induced to use memory‐based processing to form their attitudes but not when induced to use on‐line processing after exposure to a persuasive message. The recall‐attitude correlation in the memory‐based conditions was expected to be positive when the arguments were strong and negative when they were weak; 240 participants participated in a study to test these predictions. An ample and positive recall‐attitude relationship was found when participants were exposed to strong arguments in both processing conditions. A small but negative relationship was found in the weak arguments, on‐line processing condition but not the memory‐based condition. Parallel findings were obtained when need to evaluate was used to measure processing type.     

Media Enjoyment as Need Satisfaction: The Contribution of Hedonic and Nonhedonic Needs

Most early research on entertainment defines media enjoyment in functional terms as the satisfaction of hedonic needs. Two studies demonstrate the value of including nonhedonic and hedonic need satisfaction in defining enjoyment. Both studies find support for a need‐satisfaction model showing that hedonic (arousal and affect) and nonhedonic (competence and autonomy) need satisfaction account for unique variance in enjoyment experienced during video game play. Study 2 extends the findings of Study 1 to account for noninteractive media entertainment enjoyment. Results show hedonic and nonhedonic need satisfaction to be distinct but complementary components of media enjoyment. Discussion focuses on the advantage of a needs‐based approach for understanding positive valuations of media and offers a new perspective on the enjoyment–appreciation distinction.     

Colloidal Stability and Surface Chemistry Are Key Factors for the Composition of the Protein Corona of Inorganic Gold Nanoparticles

To study the influence of colloidal stability on protein corona formation, gold nanoparticles are synthesized with five distinct surface modifications: coating with citric acid, bis(p‐sulfonatophenyl)phenylphosphine dihydrate dipotassium salt, thiol‐terminated methoxy‐polyethylene glycol, dodecylamine‐grafted poly(isobutylene‐alt‐maleic anhydride), and dodecylamine‐grafted poly(isobutylene‐alt‐maleic anhydride) conjugated with polyethylene glycol. The nanoparticles are incubated with serum or bronchoalveolar lavage fluid from C57BL/6 mice (15 min or 24 h) to assess the effect of differential nanoparticle surface presentation on protein corona formation in the air–blood barrier exposure pathway. Proteomic quantification and nanoparticle size measurements are used to assess protein corona formation. We show that surface modification has a clear effect on the size and the composition of the protein corona that is related to the colloidal stability of the studied nanoparticles. Additionally, differences in the composition and size of the protein corona are shown between biological media and duration of exposure, indicating evolution of the corona through this exposure pathway. Consequently, a major determinant of protein corona formation is the colloidal stability of nanoparticles in biological media and chemical or environmental modification of the nanoparticles alters the surface presentation of the functional epitope in vivo. Therefore, the colloidal stability of nanoparticles has a decisive influence on nano–bio interactions.     

Selective Use of News Cues: A Multiple‐Motive Perspective on Information Selection in Social Media Environments

This study investigated the effects of message and social cues on selective exposure to political information in a social media environment. Based on the heuristic‐systematic model, we hypothesized that readers' selective consideration of specific cues can be explained by situational motivations. In an experiment (N = 137), subjects primed with motivational goals (accuracy, defense, or impression motivations, as well as a control group) were asked to search for information. Participants preferred attitude‐consistent information and balanced information over attitude‐inconsistent information, and also preferred highly recommended articles. Defense‐motivated partisans exhibited a stronger confirmation bias, whereas impression motivation amplified the effects of social recommendations. These findings specify the conditions under which individuals engage in narrow, open‐minded, or social patterns of information selection.     

Unique Electro‐Optical Properties of Liquid Crystals Designed for Molecular Optics

Antiferroelectric order has been known to exist in liquid crystals since more than a decade and is now an intensely studied field of research. The great application potential of antiferroelectric liquid crystals has especially been demonstrated in sophisticated flat‐panel display prototypes, which nevertheless have not yet reached manufacturing, due to the severe intrinsic problem of folds in the smectic layers, which drastically limit the achievable contrast, and which seem impossible to circumvent. By proper molecular design, we have developed and tested a new generic class of antiferroelectric materials that present an elegant solution to this problem. Their optical properties make them unique not only among liquid crystals but among electro‐optical materials in general. The design of this generic class, which we call orthoconic, also gives an illustrative example of the physical meaning of the addition of tensorial properties. Normal surface‐stabilized antiferroelectrics are optically positive biaxial crystals, with an effective optic axis along the smectic layer normal. The surprising optical property of the corresponding orthoconic antiferroelectric can be formulated as a theorem: When the tilt directions in adjacent smectic layers are made perpendicular to each other, the material becomes negatively uniaxial with the optic axis lying perpendicular to the smectic layer normal. The electro‐optic effect in such a material is based on the fact that the optic axis can be switched between three mutually orthogonal directions, corresponding to zero, negative, or positive values of the applied electric field.     

The Influence of News Media on Stereotypic Attitudes Toward Immigrants in a Political Campaign

This study investigates media effects on stereotypic attitudes toward immigrants in a political campaign that dealt with the naturalization of immigrants. By combining a content analysis of the campaign coverage with a 2‐wave panel survey, the study found that negative news portrayals of immigrants increased stereotypic attitudes in the public in the course of the campaign. Additionally, the frequent exposure to positive news portrayals of immigrants reduced the activation of negative outgroup attitudes. However, these findings are contingent on people's issue‐specific knowledge. Only people with low to moderate knowledge were influenced by negative and positive news stories about immigrants in the campaign. Well‐informed people were resistant to the effects of positive and news portrayals of immigrants.     

Reframing the Iraq War: Official Sources,Dramatic Events,and Changes in Media Framing

This study examines how official sources and dramatic events influence media framing of political issues, assessing the claims of the indexing hypothesis and event-driven models. Through an analysis of the New York Times' coverage of the Iraq War in late 2005 and early 2006, this study compares coverage from before and after the bombing of a major Shi'ite shrine in Iraq. The analysis shows that journalists avoided the preferred frame of the White House while amplifying the preferred frame of the military. It also shows that the bombing spurred journalists to reframe the conflict. These findings challenge parts of the indexing hypothesis and support a more event-driven model of media framing.     

To Your Health: Self‐Regulation of Health Behavior Through Selective Exposure to Online Health Messages

Reaching target audiences is of crucial importance for the success of health communication campaigns, but individuals may avoid health messages if they challenge their beliefs or behaviors. A lab study (N = 419) examined effects of messages' consistency with participants' behavior and source credibility on selective exposure for 4 health lifestyle topics. Drawing on self‐regulation theory and dissonance theory, 3 motivations were examined: self‐bolstering, self‐motivating, and self‐defending. Prior behavior predicted selective exposure across topics, reflecting self‐bolstering. Standard‐behavior discrepancies also affected selective exposure, consistent with self‐motivating rather than self‐defending. Selective exposure to high‐credibility sources advocating for organic food, fruits and vegetable consumption, exercise, and limiting coffee all fostered accessibility of related standards, whereas messages from low‐credibility sources showed no such impact.     

Moderating Effect of Group Cue While Processing News on Immigration: Is the Framing Effect a Heuristic Process?

This paper presents a study on the sociocognitive effects of news frames on immigration. One hundred and eighty‐six individuals were exposed to a newspaper story on increased immigration to Spain. The newspaper highlighted (a) the positive (economic contribution frame) versus negative (crime growth frame) consequences and (b) the group cue—Latinos versus Moroccans. In contrast with economic contribution frame, crime growth frame stimulated more negative cognitive responses toward immigration, increased the salience of immigration as a problem, generated a negative attitude toward immigration, and induced greater disagreement with positive beliefs about the consequences of immigration for the country. We conceptualized the framing effect as a heuristic process in which peripheral cues in the news story guided information processing.     

Overrepresentation and underrepresentation of African Americans and Latinos as lawbreakers on television news

We conducted a content analysis of a random sample of local television news programming in Los Angeles and Orange counties to assess representations of Blacks, Latinos, and Whites as lawbreakers and law defenders. 'Intergroup' comparisons of perpetrators (Black and Latino vs. White) revealed that Blacks and Latinos are significantly more likely than Whites to be portrayed as lawbreakers on television news. 'Interrole' comparisons (lawbreakers vs. law defenders) revealed that Blacks and Latinos are more likely to be portrayed as lawbreakers than as defenders, whereas Whites are significantly more likely to be portrayed as defenders than as lawbreakers. 'Interreality' comparisons of lawbreakers (television news vs. crime reports from the California Department of Justice) revealed that Blacks are overrepresented as lawbreakers, and Latinos and Whites are underrepresented as lawbreakers on television news compared to their respective crime rates obtained from the California Department of Justice for Los Angeles and Orange counties. Interreality comparisons of law defenders (television news vs. county employment records) revealed that Whites are overrepresented, Latinos are underrepresented, and Blacks are neither over- nor underrepresented as police officers on television news compared to employment reports. We speculate on the psychological effects of exposure to these intergroup, interrole, and interreality differentials on television news viewers.     

Chasing the Bad News: An Analysis of 2005 Iraq and Afghanistan War Coverage on NBC and Fox News Channel

This study analyzes all stories aired on NBC Nightly News and Fox News Channel's Special Report With Brit Hume during 2005 about the U.S. wars in Iraq and Afghanistan, and compares that coverage with real‐world indicators to address an important question: Did the news media over‐report bad news from these conflicts, as claimed by the Bush administration and as one might expect given research into the press' negativity bias? This study finds that while both channels focused a fair amount on negative storylines, overall the news actually underplayed bad news from both countries. Fox News was much more sympathetic to the administration than NBC, suggesting that scholars should consider Fox as alternative, rather than mainstream, media.     

Dose‐Dependent Media Priming Effects of Stereotypic Newspaper Articles on Implicit and Explicit Stereotypes

Current research draws a distinction between stereotype activation and application. Building on this differentiation, we present an implicit social cognition model of media priming: Implicit stereotypes (i.e., automatically activated stereotypes) are the outcome of associative processes, whereas explicit stereotypes (i.e., overtly expressed judgments) represent the outcome of propositional processes. We tested some of the model's basic predictions in an experiment. We found that a Gaussian distribution function explained the explicit media priming effect (i.e., decay in effect size at very high dose levels). However, a monotonic function explained the implicit media priming effect. This indicates that stereotypic content may impact implicit stereotypes even if the mass‐mediated content is perceived as invalid. We discuss this finding regarding possible media‐based reduction strategies.