Computer simulations show that an unstructured neuralnetwork model (Shultz & Bale, 2001) covers the essential features of infant differentiation of simple grammars in an artificial language, and generalizes by both extrapolation and interpolation. Other simulations (Vilcu & Hadley, 2003) claiming to show that this model did not really learn these grammars were flawed by confounding syntactic pa...

The prevalence of byssinosis and of chronic bronchitis was studied in a questionnaire investigation among workers in bale opening areas, carding rooms, and spinning rooms in five Swedish cotton mills. Airborne dust and Gram-negative bacteria was measured. Nineteen per cent of the interviewed workers reported symptoms of light byssinosis (grade 1/2). The prevalence of symptoms was not related to...