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A twin boundary is a defect that introduces a plane of mirror symmetry in the ordering of a crystal. For example, in cubic close-packed crystals, the stacking sequence of a twin boundary would be ABCABCBACBA. On planes of single crystals, steps between atomically flat terraces can also be regarded as planar defects.
The two-streams hypothesis is a model of the neural processing of vision as well as hearing. [1] The hypothesis, given its initial characterisation in a paper by David Milner and Melvyn A. Goodale in 1992, argues that humans possess two distinct visual systems. [2] Recently there seems to be evidence of two distinct auditory systems as well.
Models of disability are analytic tools in disability studies used to articulate different ways disability is conceptualized by individuals and society broadly. [1] [2] Disability models are useful for understanding disagreements over disability policy, [2] teaching people about ableism, [3] providing disability-responsive health care, [3] and articulating the life experiences of disabled people.
The Boundary Questionnaire has been related to the Five Factor Model of personality, and "thin boundaries" are mostly associated with openness to experience, particularly the facets of openness to fantasy, aesthetics, and feelings, although some of the content was correlated with neuroticism, extraversion, and low conscientiousness. [4]
Reciprocal determinism is the theory set forth by psychologist Albert Bandura which states that a person's behavior both influences and is influenced by personal factors and the social environment. Bandura accepts the possibility that an individual's behavior may be conditioned through the use of consequences. At the same time he asserts that a ...
Boundary critique (BC) is the concept in critical systems thinking that, according to Ulrich (2002), states that "both the meaning and the validity of professional propositions always depend on boundary judgments as to what 'facts' (observation) and 'norms' (valuation standards) are to be considered relevant" or not.
The dual systems model, also known as the maturational imbalance model, [1] is a theory arising from developmental cognitive neuroscience which posits that increased risk-taking during adolescence is a result of a combination of heightened reward sensitivity and immature impulse control.
A large body of research in meaningful 'real-world' contexts lends support to the applicability of the common ingroup identity model. In a diverse range of intergroup situations, it has been demonstrated that the conditions specified by the contact hypothesis (i.e. cooperative interaction) reduce intergroup bias through transforming members' representations of separate group memberships to one ...