The thrust of human development over the life course is individuation. Birth groups grow more heterogeneous with age. Aside from there being a number of commonalities among members of cohorts, the stamp of life lived tends to increase individual differences, whether these be in organ functioning or other physical measures or social, psychological or economic characteristics. At the same time, t...

In a recent paper, Sun Demirli (2010) proposes an allegedly new way of conceiving of individuation in the context of the bundle theory of object constitution. He suggests that allowing for distance relations to individuate objects solves the problems with worlds containing indiscernible objects that would otherwise affect the theory. The aim of the present paper is i) To show that Demirli’s pro...

The authors examined the relationship between separation-individuation, adult attachment styles, and college adjustment, One hundred fifty-six young adults completed the Psychological Separation Inventory (J. A. Hoffman, 1984; J. A. Hoffman & B. Weiss, 1987), 2 subscales from the Student Adaptation to College Questionnaire (R. W Baker & B. Siryk, 1989), a measure of pathology of separation-indi...

Four experiments investigated whether 9-month-old infants could use the presence of labels to help them establish a representation of two distinct objects in a complex object individuation task. We found that the presence of two distinct labels facilitated object individuation, but the presence of one label for both objects, two distinct tones, two distinct sounds, or two distinct emotional exp...

Much of the recent countability research agrees on the idea that a satisfactory account of individuation in terms of what counts as “one” unit for counting is highly relevant for characterizing a semantics of the mass/count distinction. (What counts as “one” is not necessarily a formal atom in a Boolean algebra or a natural unit associated with natural kinds like cat.) Taking the most parsimoni...

Since the publication of [Gelman, R., & Gallistel, C. R. (1978). The child's understanding of number. Cambridge, MA: Harvard University Press.] seminal work on the development of verbal counting as a representation of number, the nature of the ontogenetic sources of the verbal counting principles has been intensely debated. The present experiments explore proposals according to which the verbal...

Faces are processed holistically, but the locus of holistic processing remains unclear. We created two novel races of faces (Lunaris and Taiyos) to study how experience with face parts influences holistic processing. In Experiment 1, subjects individuated Lunaris wherein the top, bottom, or both face halves contained diagnostic information. Subjects who learned to attend to face parts exhibited...