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The purpose of the study is closer investigating the nature of the response codes that are (automatically) activated by the physical size of visual stimuli. Previous research has demonstrated a compatibility effect between physical stimulus size and left vs. right response positions. In particular, participants respond faster and more accurate with a left-hand response to small/er stimuli than to large/r stimuli, whereas the opposite is true for right-hand responses. This physical stimulus size - response position compatibility effect occurs not only when stimulus size is task-relevant, but also when it is irrelevant, suggesting that stimulus size can activate the associated response in an automatic manner. Notably, in previous studies, spatial response position was always confounded with anatomical hand status (i.e., participants pressed a left key with the left hand, and a right key with the right hand). In the present study, we want to determine whether response position or anatomical hand status is more important for the compatibility effect. Therefore, participants will respond to a small or large stimulus with a compatible S-R mapping (small-left, large-right) or with an incompatible mapping (small-right, large-left). In addition, participants will perform the two mapping conditions with parallel arms in one part of the experiment, and with crossed arms in another part of the experiment.

The purpose of the study is closer investigating the nature of the response codes that are (automatically) activated by the physical size of visual stimuli. Previous research has demonstrated a compatibility effect between physical stimulus size and left vs. right response positions. In particular, participants respond faster and more accurate with a left-hand response to small/er stimuli than to large/r stimuli, whereas the opposite is true for right-hand responses. This physical stimulus size - response position compatibility effect occurs not only when stimulus size is task-relevant, but also when it is irrelevant, suggesting that stimulus size can activate the associated response in an automatic manner. Notably, in previous studies, participants always responded bimanually, that is, participants pressed a left key with one (usually the left) hand, and a right key with the other (usually the right) hand. In the present study, we want to determine whether the effect can also occur with unimanual responses, performed either with the left or right hand, and whether there are differences between the unimanual conditions. Therefore, participants will respond to a small or a large stimulus with three different response sets (unimanual left, bimanual, unimanual right). With each response set, participants will respond with a compatible S-R mapping (small-left, large-right) and with an incompatible mapping (small-right, large-left), to determine the size of the compatibility effect for each response set (and participant).

Previous studies have demonstrated a compatibility effect between physical stimulus size and horizontal response location (e.g., Wühr & Seegelke, 2018; Journal of Cognition). A mapping that requires a left-hand response to a small stimulus and a right-hand response to a large stimulus allows for faster and more accurate responses than the reverse mapping. Because all previous studies on the compatibility effect have required manual responses, we do not yet know whether the effect is confined to manual responses or not. Hence, the purpose of the present experiment was (a) to test whether the compatibility effect between physical stimulus size and response location would also occur in vocal responses, and (b) to compare the compatibility effect in manual and vocal responses. Previous studies have demonstrated that effects of spatial S-R correspondence do not only occur with manual (i.e., spatial) responses, but also with vocal (i.e., nonspatial) responses (e.g., Wühr, 2006, Acta Psychologica). Hence, one might expect that the compatibility effect between physical stimulus size and horizontal response location also occurs with vocal responses.

The object context effect refers to how the environment or background of an object affects how we perceive or understand the object. Researchers from previous studies concluded that a critical factor in the object context effect is the presence of features that allow upward and downward stimuli to be encoded as left and right with respect to the rotated background. What is not yet known is whether certain objects, lack salient features that enable spatial encoding. The current study aims to discover whether an object context effect occurs when such a salient feature is added to objects.

Research on stimulus-response compatibility effects is reviewed, with an integrated theoretical perspective provided that stresses mental coding of the stimulus and response sets. Eleven experiments, plus two follow-up experiments, are described in detail. The first six evaluate the nature of the codings used in spatial-precuing tasks. The remaining seven experiments examine the influence of practice on performance in the spatial- precuing tasks, as well as in symbolic-compatibility tasks. The experiments show that the codings used by subjects are affected by manipulations of the stimulus set but not of the response set. Compatibility effects within both tasks are reduced greatly by three sessions of practice. Transfer of these benefits to related tasks occurs in situations for which the response set is not altered. However, after more extended practice, partial transfer occurs even when the response set is changed. The results are interpreted in terms of an account that emphasizes salient-feature codings in a declarative stage of skill acquisition, with task- specific procedures acquired from practice.

The concept of stimulus-central processing-response compatibility is described as a principle by which a task with verbal central-processing components is best served by auditory input and speech response, while a task with spatial processing components is best served by visual input and manual response. A model is proposed that predicts the joint effects of S-C-R compatibility and resource competition when a spatial and verbal task, each paired with all four input/output modality combinations, is time-shared with a visually displayed manual control task. This model was tested in an F-18 flight simulator. Nine subjects time-shared a discrete verbal (communication, navigation, and identification), and spatial (target acquisition) task with the task of flying the simulator through two-dimensional 'tunnel' in the sky. Each discrete task was performed singly with all four i/o combinations, and also concurrently with the flight task. The predictions of the model were upheld. Single task performance on each task benefitted from increasing levels of S-C-R compatability. In dual task conditions, performance was influenced jointly by compatibility and by resource competition as predicted from the multiple resource model. Furthermore, conditions of high compatibility were uninfluenced by increases in flight task difficulty, while conditions of low compatibility suffered degradation from the difficulty increase.

This study seeks to explore the following question: how is performance when determining in which direction the car ahead will turn affected by the congruency, incongruency, or neutrality between the relevant spatial location and irrelevant shape of the car’s rear signal lights? This is an applied topic of interest as it utilizes the well-established psychological phenomenon of stimulus-response compatibility – consistency between an observation and its response – to examine the possible design failure, and consequent danger, of the rear signal lights on some versions of the mini-countryman vehicle.

The two principal accomplishments during this period have been the successful extension of the dimensional overlap model to sequential effects, and the completion of Greg Stevens' dissertation. The sequential effects on which we have been focusing are the speed ups and slow downs of RT with repetitions and non-repetitions, respectively, of stimuli and/or responses in choice RT tasks - the so-called repetition effect. Of particular importance for the dimensional overlap model is the finding that the repetition effect interacts with S-R compatibility. We have now shown that the DO model can account for this interaction, as well as for the repetition effects of irrelevant stimuli, by postulating that the information requirements on repeated trials are less than on non repeated trials.

This article is from Frontiers in Psychology , volume 4 . Abstract In the present study, we tested right- and left-handed participants in a Poffenberger paradigm with bimanual responses and hands either in an anatomical or in a left-right inverted posture. We observed a significant positive crossed-uncrossed difference (CUD) in RTs for both manual dominance groups and both response postures. These results rule out an explanation of the CUD in terms of stimulus-response spatial compatibility (SRSC) and provide convincing evidence on the important role of interhemispheric callosal transfer in bimanual responding in right- as well as left-handed individuals.

Alzheimer is one of the diseases that can cause the patient to act in different and unpredictable ways. This disease destroys memory and thinking skills and, eventually, the ability to carry out the simplest tasks. Advanced in technology actually can help them be more independent doing their routines. Hence, this study was conducted to investigate the relationship between stimulus-response compatibility (SRC) and ambient intelligent elements for Alzheimer‟s patients. The aim of this study is to obtain a strong answer on how ambient elements (stimulus) such as ambient colours, lights and pictures can assist Alzheimer‟ patients in daily living activities. For this reason, we developed a flashcard game based on ambient colours and pictures to achieve two objectives which are (i) to test the ambient‟s factors that highly effect the responses of Alzheimer‟s patients and (ii) to observe the response towards the given instructions. This experiment has been tested to 10 participants with mild-stage of Alzheimer‟s disease. The findings of this experiment show that the patient response more towards ambient colours compared to the ambient pictures. 90% of respondents capable to complete the task correctly and quickly based on ambient colours. In addition, the experiment proved that the participants have no difficulty in order to understand the instructions given to them for completing the tasks smoothly.

Previous studies have demonstrated a compatibility effect between physical stimulus size and horizontal response location (e.g., Wühr & Seegelke, 2018; Journal of Cognition). A mapping that requires a left-hand response to a small stimulus and a right-hand response to a large stimulus allows for faster and more accurate responses than the reverse mapping. Some informal observations, and the results of an unpublished pilot study, suggested that handedness may affect this compatibility effect. Therefore, the main purpose of the present experiment was to test whether and how handedness would affect the compatibility effect between physical stimulus size and response location. We expected that the effect was stronger in right-handed as compared to left-handed people. An additional purpose of our experiment was to investigate whether differences in grip or hand strength might be related to differences in the size of the compatibility effect both between and within groups.