Three experiments investigated changes from 15 to 30 months of age in children’s (N = 114) mastery of relations between an object and an aperture, supporting surface, or form. When choosing between objects to insert into an aperture, older children selected objects of an appropriate size and shape, but younger children showed little selectivity. Further experiments probed the sources of younger children’s difficulty by comparing children’s performance placing a target object in a hole, on a 2-dimensional form, or atop another (...) solid object. Together, the findings suggest that some factors limiting adults’ object representations, including the difficulty of comparing the shapes of positive and negative spaces and of representing shapes in 3 dimensions, contribute to young children’s errors in manipulating objects. (shrink)

There is considerable evidence that animals can time multiple intervals that occur separately or concurrently. Such simultaneous temporal processing occurs both in temporal discrimination procedures and in classical conditioning procedures. The first part of the chapter will consist of the review of the evidence for simultaneous temporal processing, and the conditions under which the different intervals have influences on each other. The second part of the chapter will be a brief description of two timing theories: Scalar Timing Theory and a (...) Packet Theory of Timing. Scalar Timing Theory consists of a pacemaker-switch-accumulator system that serves as a clock, a memory that consists of examples of previously reinforced intervals, and a decision process that involves a comparison of ratios to a criterion; the Packet Theory of Timing consists of a conditional expected time function that serves as a clock, a memory that consists of weighted sums of these values, and a probabilistic decision process that produces packets of responses. Both of these theories will be applied to an example of simultaneous temporal processing by rats, and will serve as the basis for some general comments about the basis for selecting and evaluating quantitative theories of timing. (shrink)

Reading Certainty offers incisive historical analysis of the foundational questions of the Christian tradition: how are we to read scripture, and how can we know we are saved? This collection of essays honors the work and thought Susan E. Schreiner by exploring the import of these questions across a wide range of time periods. With contributions from renowned scholars and from Schreiner's students from her more than three decades of teaching, each of the contributions highlights the nexus of certainty, perception, (...) authority, and exegesis that has defined her scholarly work. Intellectual historians, early modernists, and scholars of Christianity will all appreciate this testament to Schreiner's influence. Contributors include: Vincent Evener, Bruce Gordon, Ralph Keen, Mark Lambert, Kevin J. Madigan, Richard A. Muller, Willemien Otten, Daniel Owings, Elizabeth Palmer, Karen Park, Barbara Pitkin, Ronald K. Rittgers, William Schweiker, Jonathan Strom, and Matthew Vanderpoel. (shrink)