After relatively rapid population growth in the later sixteenth century and slower growth in the first four decades of the seventeenth century, the midseventeenth century nationally saw growth change to stagnation and even loss. Falling fertility, changes in nuptiality or worsening mortality, or a combination of all these, could have caused this phenomenon. The aim of this article is to examine...

Recent evidence suggests that 3-year-olds can take other people's visual perspectives not only when they perceive different things (Level 1) but even when they see the same thing differently (Level 2). One hypothesis is that 3-year-olds are good perspective takers but cannot confront different perspectives on the same object (Perner, Stummer, Sprung, & Doherty, 2002). In 2 studies using color f...

This paper draws on evidence from a local Sure Start evaluation of low participation rates among ethnic minority families. It reflects national concerns regarding the low use of children's services among ethnic minority families. The evaluation aimed to improve understanding of the factors that affect families' participation in Sure Start services. A sample of 34 ethnic minority parents, six Su...

A recent meeting to evaluate the state of the art of protein structure prediction saw progress on all fronts; for prediction methods based on comparative modeling or fold recognition, the progress was incremental, but in the case of ab initio structure prediction, some surprising successes were reported.

BEHAVIOR IS THE RESULT OF the interaction between genes and the environment. In earlier chapters we saw how genes influence behavior. We now examine how the environment influences behavior. In humans the most important mechanisms by which the environment alters behavior are learning and memory. Learning is the process by which we acquire knowledge about the world, while memory is the process by...

Subjects saw kinetic depth displays whose shape (sphere or cylinder) was defined by luminous dots distributed randomly on the surface or in the volume of the object. Subjects rated perceived 3-D depth, rigidity, and coherence. Despite individual differences, all 3 ratings increased with the number of dots. Dots in the volume yielded ratings equal to or greater than surface dots. Each rating var...

Historians of chemistry usually associate the eighteenth century with the Chemical Revolution, but it could just as readily be called 'the century of gases' (or 'airs', as they were called in the eighteenth century). In the early part of the century, the British pneumatic chemists struggled to replace the traditional notion 'Air', understood as an inert chemical element, with the concept of 'ai...

Do 18-month-olds understand that an agent's false belief can be corrected by an appropriate, though not an inappropriate, communication? In Experiment 1, infants watched a series of events involving two agents, a ball, and two containers: a box and a cup. To start, agent1 played with the ball and then hid it in the box, while agent2 looked on. Next, in agent1's absence, agent2 moved the ball fr...

The early modern era saw important changes in the character of warfare in Europe, including the development of larger, permanent armies and navies. Historians have studied many key aspects of what some call the ‘‘military revolution’’, whose character and timing have become a matter of debate; but some important features of these emerging military communities remain largely unexplored. One subj...

We show that minimal SO(10) Grand Unification models where the fermions have Yukawa couplings to only one (complex) 10 and one 126 of Higgs scalars lead to a very predictive neutrino spectrum. This comes about since the standard model doublet contained in the 126 of Higgs (needed for the see–saw mechanism) receives an induced vacuum expectation value at tree–level, which, in addition to correct...