Petrography or traded from elsewhere. This kind of information, along with other evidence, can support conclusions about settlement patterns, group and individual mobility, social contacts, and trade networks. In addition, an understanding of how certain minerals are altered at specific temperatures can allow archaeological petrographers to infer aspects of the ceramic production process itself, such as minimum and maximum temperatures reached during the original firing of the pot. Petrography Petrography is a branch of petrology that focuses on detailed descriptions of rocks. Someone who studies petrography is called a petrographer. The mineral content and the textural relationships within the rock are
The Gothenburg Study of Children with DAMP conclusion which does not need strengthening by what could have been found in the destroyed research material". (Another problem is the boy:girl ratios in the study; the ratio in the control group is 1:1, whereas the ratio in the index groups is 4:1.) The major Swedish newspapers have had tens of stories on the controversy: Dagens Nyheter, Svenska Dagbladet, Göteborgs-Posten, etc. There was also a one-hour program about DAMP on Swedish TV that discussed the controversy over Gillberg's Gothenburg study at length. In Norway, the newspaper Dagsavisen ran a series of critical stories. The Gothenburg Study of Children with DAMP