Same, same — but different: On the use of Navon derived measures of global/local processing in studies of face processing

Gerlach, Christian; Krumborg, Julie Rudbech

doi:10.1016/j.actpsy.2014.09.004

Cited by 21 publications

(24 citation statements)

References 40 publications

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“…As demonstrated by Gerlach and Krumborg (2014), many formerly used indexes derived from Navon's paradigm have probably been unreliable. To avoid this problem, we use an index of global/local shape bias which is based on the standardized mean difference (Cohen's d) between RTs to Local Consistent and Global Consistent trials.…”

Section: Discussionmentioning

confidence: 99%

“…To avoid this problem, we use an index of global/local shape bias which is based on the standardized mean difference (Cohen's d) between RTs to Local Consistent and Global Consistent trials. In comparison with other indexes derived from Navon's paradigm, this index, which we term the Global-Local precedence index, is pure, because it measures differences in global and local processing that are not confounded by interference effects (Gerlach & Krumborg, 2014). The higher the score on this index, the faster are responses to global as compared with local shape characteristics.…”

Section: Discussionmentioning

confidence: 99%

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Global precedence effects account for individual differences in both face and object recognition performance

Gerlach

Starrfelt

2018

Psychon Bull Rev

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There has been an increase in studies adopting an individual difference approach to examine visual cognition and in particular in studies trying to relate face recognition performance with measures of holistic processing (the face composite effect and the part-whole effect). In the present study we examine whether global precedence effects, measured by means of non-face stimuli in Navon's paradigm, can also account for individual differences in face recognition and, if so, whether the effect is of similar magnitude for faces and objects. We find evidence that global precedence effects facilitate both face and object recognition, and to a similar extent. Our results suggest that both face and object recognition are characterized by a coarse-to-fine temporal dynamic, where global shape information is derived prior to local shape information, and that the efficiency of face and object recognition is related to the magnitude of the global precedence effect.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Global precedence effects account for individual differences in both face and object recognition performance

Gerlach

Starrfelt

2018

Psychon Bull Rev

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“…Some of these indexes are complex in that they tap inter-level interference effects [ 2 ] while others are more simple in that they tap global/local precedence effects or interference effects confined to a particular level [ 28 ]. Considering that global/local precedence effects and inter-level interference effects reflect different mechanisms [ 30 , 31 ], it is perhaps not surprising that different results have been obtained. Furthermore, the indexes applied also seem to differ considerably in reliability [ 30 ], which may have added further to the discrepancies.…”

Section: Introductionmentioning

confidence: 99%

“…Considering that global/local precedence effects and inter-level interference effects reflect different mechanisms [ 30 , 31 ], it is perhaps not surprising that different results have been obtained. Furthermore, the indexes applied also seem to differ considerably in reliability [ 30 ], which may have added further to the discrepancies.…”

Section: Introductionmentioning

confidence: 99%

Delayed processing of global shape information in developmental prosopagnosia

et al. 2017

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There is accumulating evidence suggesting that a central deficit in developmental prosopagnosia (DP), a disorder characterized by profound and lifelong difficulties with face recognition, concerns impaired holistic processing. Some of this evidence comes from studies using Navon’s paradigm where individuals with DP show a greater local or reduced global bias compared with controls. However, it has not been established what gives rise to this altered processing bias. Is it a reduced global precedence effect, changes in susceptibility to interference effects or both? By analyzing the performance of 10 individuals with DP in Navon’s paradigm we find evidence of a reduced global precedence effect: The DPs are slower than controls to process global but not local shape information. Importantly, and in contrast to previous studies, we demonstrate that the DPs perform normally in a comprehensive test of visual attention, showing normal: visual short-term memory capacity, speed of visual processing, efficiency of top-down selectivity, and allocation of attentional resources. Hence, we conclude that the reduced global precedence effect reflects a perceptual rather than an attentional deficit. We further show that this reduced global precedence effect correlates both with the DPs’ face recognition abilities, as well as their ability to recognize degraded (non-face) objects. We suggest that the DPs’ impaired performance in all three domains (Navon, face and object recognition) may be related to the same dysfunction; delayed derivation of global relative to local shape information.

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“…Considering that global/local precedence effects and interlevel interference effects reflect different mechanisms [30,31], it is perhaps not surprising that different results have been obtained. Furthermore, the indexes applied also seem to differ considerably in reliability [30], which may have added further to the discrepancies.…”

Section: Introductionmentioning

confidence: 99%

Delayed processing of global shape information in developmental prosopagnosia

Gerlach¹,

Klargaard²,

Petersen³

et al. 2017

Preprint

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There is accumulating evidence suggesting that a central deficit in developmental prosopagnosia (DP), a disorder characterized by profound and lifelong difficulties with face recognition, concerns impaired holistic processing. Some of this evidence comes from studies using Navon's paradigm where individuals with DP show a greater local or reduced global bias compared with controls. However, it has not been established what gives rise to this altered processing bias. Is it a reduced global precedence effect, changes in susceptibility to interference effects or both? By analyzing the performance of 10 individuals with DP in Navon's paradigm we find evidence of a reduced global precedence effect: The DPs are slower than controls to process global but not local shape information. Importantly, and in contrast to previous studies, we demonstrate that the DPs perform normally in a comprehensive test of visual attention, showing normal: visual short-term memory capacity, speed of visual processing, efficiency of top-down selectivity, and allocation of attentional resources. Hence, we conclude that the reduced global precedence effect reflects a perceptual rather than an attentional deficit. We further show that this reduced global precedence effect correlates both with the DPs' face recognition abilities, as well as their ability to recognize degraded (non-face) objects. We suggest that the DPs' impaired performance in all three domains (Navon, face and object recognition) may be related to the same dysfunction; delayed derivation of global relative to local shape information.

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Same, same — but different: On the use of Navon derived measures of global/local processing in studies of face processing

Cited by 21 publications

References 40 publications

Global precedence effects account for individual differences in both face and object recognition performance

Global precedence effects account for individual differences in both face and object recognition performance

Delayed processing of global shape information in developmental prosopagnosia

Delayed processing of global shape information in developmental prosopagnosia

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