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This paper proposes that an organism's integrated repertoire of operant behavior has the status of a biological system, similar to other biological systems, like the nervous, cardiovascular, or immune systems. Evidence from a number of sources indicates that the distinctions between biological and behavioral events is often misleading, engendering(More)
The original purposes of the American Psychological As-sociation's (APA ' s) Committee for the Protection of Human Participants in Research (CPHPR), the new purposes of the CPHPR under its new name, the Committee on Standards in Research (CSR) and the scientific and social zeitgeist that has occasioned this change are described. Also several areas of(More)
PURPOSE The mean length of children's utterances is a valuable estimate of their early language acquisition. The available normative data lack documentation of language and nonverbal intelligence levels of the samples. This study reports age-referenced mean length of utterance (MLU) data from children with specific language impairment (SLI) and children(More)
BACKGROUND Tangle analysis has been applied successfully to study proteins which bind two segments of DNA and can knot and link circular DNA. We show how tangle analysis can be extended to model any stable protein-DNA complex. RESULTS We discuss a computational method for finding the topological conformation of DNA bound within a protein complex. We use(More)
Visual-spatial representations of verticality and horizontality (V/H) were assessed by novel plumb-line and water-level tasks in a replication of Jamison and Signorella's (1980) study of sex role orientation differences in V/H performance. Comparisons between men and women classified as masculine, feminine, and androgynous revealed no significant effect for(More)
Introduction For the past seven years we have been investigating the interpretation and structure of " picture " noun phrases (PNPs) NPs headed by a " representational " noun picture, film, photograph, novel, etc. (1) a picture of him/a picture of himself (2) John's picture of him/John's picture of himself In this talk I'll focus on PNPs lacking possessor(More)