background: the kaufman assessment battery for children 2 nd edition (kabc-ii) is an individually administered measure of the processing and cognitive abilities of children and adolescents aged 3 through 18. it is for assessing neurological, psychoeducational, clinical and psychological aspects of all the pre-school and high-school levels. this is a theory-based clinical instrument that contrib...

We re-examined data from the classic Luria-Delbrück fluctuation experiment, which is often credited with establishing a Darwinian basis for evolution. We argue that, for the Lamarckian model of evolution to be ruled out by the experiment, the experiment must favor pure Darwinian evolution over both the Lamarckian model and a model that allows both Darwinian and Lamarckian mechanisms (as would h...

Luria and Delbrück introduced a very useful and subsequently widely adopted framework for quantitatively understanding the emergence of new cellular lineages. Here, we provide an analytical treatment of the fully stochastic version of the model, enabled by the fact that population sizes at the time of measurement are invariably very large and mutation rates are low. We show that the Lea-Coulson...