Our understanding of early copper metallurgy in the Iberian Peninsula is mostly based on analysis from well-studied regions Southeast and Southwest. This paper focuses two recently recovered Chalcolithic metallurgical assemblages outside these traditional research foci: slagged crucibles Lugar Viejo III (Zaragoza) large slag cakes Cueva del Cañaveralejo (Córdoba). Analysis compositions microstr...

Abstract. Given a doubling measure μ on R, it is a classical result of harmonic analysis that Calderón-Zygmund operators which are bounded in L(μ) are also of weak type (1, 1). Recently it has been shown that the same result holds if one substitutes the doubling condition on μ by a mild growth condition on μ. In this paper another proof of this result is given. The proof is very close in spirit...

A change in subtask order in the psychological refractory period (PRP) paradigm increases the effect of stimulus onset asynchrony (SOA) on the second response. We used a paradigm with cued, randomly determined subtask order to test the hypothesis that this SOA by order switch overadditivity reflects order control, via "copying" stimulus order. In Experiments 1a and 1b, overadditivity was eviden...

The Beaker phenomenon in Britain is typically represented by a particular form of pottery and its inclusion graves with flexed or crouched inhumations referred to as burials. Analysis the full range burial evidence, however, reveals high degree variability funerary rites including cremation skeletal disarticulation. Summed probability distribution analysis radiocarbon dates provides evidence fo...

Although dual-task interference is ubiquitous in a variety of task domains, stop-signal studies suggest that response inhibition is not subject to such interference. Nevertheless, no study has directly examined stop-signal performance in a dual-task setting. In two experiments, stop-signal performance was examined in a psychological refractory period task, in which subjects inhibited one respon...

The standard bottleneck model of the psychological refractory period (PRP) assumes that the selection of the second response is postponed until the first response has been selected. Accordingly, dual-task interference is attributed to a single central-processing bottleneck involving decision and response selection, but not the execution of the response itself. In order to critically examine the...