Responses to commentaries

This paper is an author response to three commentaries, by Robert Kraut and Itamar Rosenn (2012), Barry Wellman (2012) and Mark van Vugt (2012), on our article entitled ‘Relationships and the social brain: Integrating psychological and evolutionary perspectives’ ( Sutcliffe, Dunbar, Binder, & Arrow, 2012 ).     

Happiness No Matter the Cost? An Examination on How Efficiently Individuals Reach Their Happiness Levels

Happiness measures, reflecting individuals’ well-being, have received increasing attention by policy makers. Policies could target absolute happiness levels when aiming at increasing a society’s well-being. But given upper bounds of happiness measures, as well as the possibilities of decreasing returns to happiness resources, we argue that an important measure of interest is the efficiency with which individuals convert their resources into happiness. In order to examine the effects of policies on this efficiency and to better understand the trajectories of human well-being over time, we suggest an efficiency measure that is calculated via a nonparametric order-m approach borrowed from the production efficiency literature. Our approach is exemplified using micro level data from the British Household Panel Survey (BHPS). Between 20 and 27% of the British populace are efficient in attaining happiness during our sample period. A negative influence on “happiness efficiency” is being unemployed while a positive influence is cohabitation with a partner. Our results are robust with respect to using a more comprehensive subjective well-being measure, but there are gender differences, for example in the (positive) influence that retirement has on males’ efficiency, or the (positive) influence of maternity leave on females.     

We all live in Germany but … Ingroup projection,group‐based emotions and prejudice against immigrants

Immigration, cultural diversity and integration are among the most central challenges for modern societies. Integration is often impeded by negative emotions and prejudices held by the majority members towards immigrants in a common society. Based on the ingroup projection model (Mummendey & Wenzel, 1999), we examined the impact of perceived relative ingroup prototypicality on intergroup emotions and prejudice. Additionally, we examined whether this impact is causal and explored the issue of causality in more detail contrasting a linear causal model with bi‐directional or reciprocal causality. Hypotheses were tested in a study with a two‐wave panel of majority members (N=1085) in Germany. We examined the proposed relations between relative ingroup prototypicality, intergroup emotions and prejudice and determined the causal direction of these relationships. Results support the predictive power of relative ingroup prototypicality on intergroup emotions and prejudice. Moreover, most causal relations between our measures are reciprocally causal. We discuss the implications of these findings for the general conception of prejudice and intergroup emotions. Copyright © 2009 John Wiley & Sons, Ltd.     

Extraction of information to the left of the fixated word in reading.

The present experiment used 2 different eye-contingent display change techniques to determine whether information is extracted from English text even when it is to the left of the currently fixated word. Preview display changes were during the 1st saccade entering the target word region, whereas postview display changes were during the 1st saccade leaving that region. Previews and postviews were either identical, related, or unrelated to the target word. "Wrong" information in the target-word region affected reading even when that information was seen only after readers were fixating to the right of that region: When readers skipped the target word, such information caused readers to regress to the target word more; when readers initially fixated the target word, such information increased "2nd-pass" processing time on the target region. The data suggest that readers often still attend to a word after it is skipped and that when readers fixate a word, they occasionally attend to the word after they have begun to fixate the next word.     

Degree of training and the novelty transfer effect

Four groups of 40 Ss were given transfer tests following 2.4, 6, or 8 14-trial blocks of paired-associate training with unequal stimulus frequencies and then retested after a further training period in which the same compound stimuli were presented at equal frequencies. The novelty effect, in which Ss respond to new combinations of training components by giving the response associated with the least frequent component, was obtained in every transfer test. It was concluded that the novelty effect is a mode of responding that is produced by differential frequencies during early learning and which, once adopted, is retained by Ss regardless of whether the frequency differential is maintained.     

Uncoupled leftward asymmetries for planum morphology and functional language processing

Explanations for left hemisphere language laterality have often focused on hemispheric structural asymmetry of the planum temporale. We examined the association between an index of language laterality and brain morphology in 99 normal adults whose degree of laterality was established using a functional MRI single-word comprehension task. The index of language laterality was derived from the difference in volume of activation between the left and right hemispheres. Planum temporale and brain volume measures were made using structural MRI scans, blind to the functional data. Although both planum temporale asymmetry (t(1,99) = 6.86, p < .001) and language laterality (t(1,99) = 15.26, p < .001) were significantly left hemisphere biased, there was not a significant association between these variables (r(99) = .01,ns). Brain volume, a control variable for the planum temporale analyses, was related to language laterality in a multiple regression (beta = -.30, t = -2.25, p < .05). Individuals with small brains were more likely to demonstrate strong left hemisphere language laterality. These results suggest that language laterality is a multidimensional construct with complex neurological origins.     

Contextual strength does not modulate the subordinate bias effect: Evidence from eye fixations and self-paced reading

Eye movements were recorded in order to examine how different sources of information—namely, meaning dominance and strength of biasing context—influence the processing of biased ambiguous words. Gaze durations were longer on ambiguous target words when the preceding context instantiated the subordinate interpretation, even with strongly biasing contexts. Identical results were obtained with a self-paced reading study. Thus, contrary to recent findings (Kellas, Martin, Yehling, Herman, & Vu, 1995), the subordinate interpretation of a biased ambiguous word was not selectively accessed even when the preceding context strongly biased that interpretation. Discrepancies between the present experiments and the Kellas et al. experiment are discussed.