Perceptual narrowing in face- and speech-perception domains in infancy: A longitudinal approach

During the first year of life, infants undergo a process known as perceptual narrowing, which reduces their sensitivity to classes of stimuli which the infants do not encounter in their environment. It has been proposed that perceptual narrowing for faces and speech may be driven by shared domain-general processes. To investigate this theory, our study longitudinally tested 50 German Caucasian infants with respect to these domains first at 6 months of age followed by a second testing at 9 months of age. We used an infant-controlled habituation-dishabituation paradigm to test the infants’ ability to discriminate among other-race Asian faces and non-native Cantonese speech tones, as well as same-race Caucasian faces as a control. We found that while at 6 months of age infants could discriminate among all stimuli, by 9 months of age they could no longer discriminate among other-race faces or non-native tones. However, infants could discriminate among same-race stimuli both at 6 and at 9 months of age. These results demonstrate that the same infants undergo perceptual narrowing for both other-race faces and non-native speech tones between the ages of 6 and 9 months. This parallel development of perceptual narrowing occurring in both the face and speech perception modalities over the same period of time lends support to the domain-general theory of perceptual narrowing in face and speech perception.     

Exploring the relationship between mindfulness,compassion and unfamiliar face identification

ABSTRACT

Research has related empathy to face recognition. Empathy is proposed as part of compassion, while compassion relates to self-compassion and mindfulness, which may be more effective in face recognition than empathy alone. Experiment 1 investigated the relationship between compassion, self-compassion and empathy, and unfamiliar face recognition memory and matching. Self-compassion, including its facets of mindfulness and common humanity, were related to better recognition, but not matching. Results did not support a relationship between face identification and empathy or compassion. Experiments 2 and 3 further investigated common humanity and mindfulness and found both constructs to relate to face recognition memory. Furthermore, aspects of mindfulness (i.e., act aware and describe) positively related to face recognition. Experiment 3 used an array matching task to further show that matching did not relate to mindfulness or common humanity. The present findings may inform new directions in face recognition research, aiming to practically assist face recognition.