Visual orientation estimation

A systematic error is reported in orientation estimation, in that on average, estimates are closer to the vertical axis than are the stimuli by up to 6°. This systematic error results from a specific mechanism that may be related to depth perception, and that is avoided in certain circumstances or when other mechanisms take over. For example, the estimates of one observer who was a welltrained professional draughtsman did not show this systematic error. Furthermore, for all observers tested, estimation of clock time is not subject to the regular orientation estimation error. Rather, observers tend to estimate timesas slightly further from the quarter hour than they really are. Orientation judgment channel capacity was also studied under various conditions. The number of discriminable orientations is far above the magic number “7“ limit, reaching over 20 in optimal circumstances. The distribution of discriminable orientations is nonlinear, in that these are more closely packed about the horizontal and vertical axis than at the oblique.     

Gender differences in phonetic processing

In research on dyslexia, inadequate or inappropriate comparisons have often been made with control subjects, frequently overlooking important gender differences. More information is needed regarding the performance of control subjects, and adults, on measures purportedly assessing phonological and orthographic processing. Using tests similar to those used in dyslexic research, 20 female and 20 male college-age students were tested to examine gender differences in phonetic processing skills. The findings suggest that in equally competent readers, gender and other factors do play a significant role in determining the time it takes for phoneme manipulation and word identification. Females, especially those with poorer academic records, are significantly slower than males on measures typically used in dyslexic research. These findings show a need for a reexamination of control group equivalence (especially regarding gender), and further exploration of variables that might influence performance on these tasks.     

Organization and work of missionaries in the Middle‐Volga in the second half of the nineteenth century

The missionary effort of the Orthodox Church in the Middle‐Volga—a region conquered by Russia in the sixteenth century and inhabited by an ethnically heterogeneous population practising Islam or a variety of indigenous religions—had led to the formation of important communities of converts. But until the nineteenth century, the church made essentially no effort to educate the converts in the meaning and content of the Orthodox faith and movements of apostasy were frequent. In the mid‐nineteenth century, an outstanding group of missionaries, concerned about the spread of Islam among the nominally Christian communities, began to deploy an important activity to enlighten converts in the Orthodox faith. Their methods—evangelization, education, and propaganda in native languages—were novel and radical. Concerned with the defence of nominally Christian populations against Muslim influences, anti‐Muslim activity was an important aspect of work of the missionaries. Missionaries developed a substantial anti‐Islamic literature and used their considerable influence to harm the Muslims culturally and politically. The legacy of the missionary experience contributed to the continuing distrust between Russians and indigenous peoples.     

The relationship between differential stimulus relatedness and implicit measure effect sizes

Implicit measures have been hypothesized to allow researchers to ascertain the existence and strength of relations between stimuli, often in the context of research on attitudes. However, little controlled behavioral research has focused on whether stimulus relations, and the degree of relatedness within such relations, are indexed by implicit measures. The current study examined this issue using a behavior‐analytic implicit‐style stimulus relation indexing procedure known as the Function Acquisition Speed Test (FAST). Using a matching‐to‐sample (MTS) procedure to train stimulus equivalence relations between nonsense syllables, the number of iterations of the procedure was varied across groups of participants, hence controlling stimulus relatedness in the resulting equivalence relations. Following final exposure to the MTS procedure, participants completed a FAST. Another group of participants was exposed to a FAST procedure with word pairs of known relatedness. Results showed that increasing relatedness resulted in a linear increase in FAST effect size. These results provide the first direct empirical support for a key process‐level assumption of the implicit literature, and offer a behavior‐analytic paradigm within which to understand these effects. These results also suggest that the FAST may be a viable procedure for the quantification of emergent stimulus relations in stimulus equivalence training.     

Selectively ignoring locations does not modulate contingent involuntary orienting,but selectively attending does

Attending to a location in the visual field facilitates processing of objects in that location, and numerous studies have revealed processing benefits by precuing target locations. Recent studies have also demonstrated that precuing a location to ignore reduces distraction by items in that location; however, precuing a feature (colour) to ignore increases distractor interference, at least before a template for rejection is established. Thus, locations, not features, can be selectively ignored. The present study used a spatial cuing task to examine whether featurally-relevant items are selected when they appear in ignored locations. The results revealed contingent attentional capture by target-relevant cues (red cue when searching for red targets, but not for onset targets), even when the cue appeared in a location that was ignored. Importantly, this was equivalent to contingent capture elicited by cues in non-ignored locations. However, when observers were precued to the target location, contingent capture was largely eliminated. The results suggest salient items with target-relevant features are selected from selectively ignored locations, but focusing attention onto a location can preclude capture by salient and target-relevant items.