Learn More
Most sequence-learning studies have confounded different types of information, making it difficult to know precisely what is learned. Addressing many of the confounds, the current study shows that people can learn 1st-, 2nd-, and 3rd-order transition probabilities. Measures directly assessing awareness of the probabilities show that the knowledge is(More)
The Paivio, Yuille, and Madigan (1968) norms for 925 nouns were extended in two ways. The first extension involved the collecting of a much more extensive and diverse set of properties from original ratings and other sources. Factor analysis of 32 properties identified 9 orthogonal factors and demonstrated both the redundancy among various measures and the(More)
An experimental design involving sequences of m distinct events can be conceptualized as an nth-order transition probability matrix specifying the probabilities with which each of the m distinct events is to follow certain n-grams. This paper describes a general method for constructing sequences of shortest possible length that satisfy any such matrix and(More)
This paper contrasts two views of the cognitive architecture underlying numerical skills and acalculia. According to the abstract-modular theory (e.g., McCloskey, Caramazza, & Basili, 1985), number processing is comprised of independent comprehension, calculation, and production subsystems that communicate via a single type of abstract quantity code. The(More)
Findings from many areas of psychology and neuroscience indicate that inhibitory mechanisms may contribute to relationships between numerous causal variables and an equally diverse set of outcome variables. Outcome variables that implicate inhibition include measures from physiology, perception, attention, action, learning and episodic memory, semantic(More)
A series of diphenylphosphonate-based probes were developed for the trypsin-like serine proteases. These probes selectively target serine proteases rather than general serine hydrolases that are targets for fluorophosphonate-based probes. This increased selectivity allows detection of low abundance serine proteases in complex proteomes using simple SDS-PAGE(More)
Since late 2000 we have developed and maintained a general purpose technical and scientific computing cluster running the FreeBSD operating system. In that time we have grown from a cluster of 8 dual In-tel Pentium III systems to our current mix of 64 dual Intel Xeon and 289 dual AMD Opteron systems. This paper looks back on the system architecture as(More)