Petrology Petrology Petrology (from the Greek πέτρος, "pétros", "rock" and λόγος, "lógos", "subject matter", see -logy) is the branch of geology that studies rocks and the conditions under which they form. Petrology has three subdivisions: igneous, metamorphic, and sedimentary petrology. Igneous and metamorphic petrology are commonly taught together because they both contain heavy use of chemistry, chemical methods, and phase diagrams. Sedimentary petrology is, on the other hand, commonly taught together with stratigraphy because it deals with the processes that form sedimentary rock. Lithology was once approximately synonymous with petrography, but in current usage, lithology focuses on macroscopic hand-sample or outcrop-scale
The Gothenburg Study of Children with DAMP The Gothenburg Study of Children with DAMP The Gothenburg Study of Children with DAMP was a study of six-year-old children in Gothenburg, Sweden that began in 1977. The purpose was to find out what proportion of the children had Deficits in Attention, Motor control and Perception (DAMP), formerly known as Minimal Brain Disorder (MBD), and to follow the development of that group over the years. The results and discussions have been published in four dissertations and approximately 30 scientific papers. The first phase of the study was designed mainly by Christopher Gillberg and Peder Rasmussen. Initially, preschool teachers in all