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From author Cara Pring: "We all love statistics, specially when they are about social media. I've made life so much easier by compiling all the statistics I could find over the past month or so in one handy bulleted article..."

"It has taken me just one month to collate another 100 social media statistics from countless (reputable) websites and articles (some of which are listed at the bottom of this article)..."

The Research Methods Knowledge Base is a comprehensive web-based textbook that addresses all of the topics in a typical introductory undergraduate or graduate course in social research methods. It covers the entire research process including: formulating research questions; sampling (probability and nonprobability); measurement (surveys, scaling, qualitative, unobtrusive); research design (experimental and quasi-experimental); data analysis; and, writing the research paper.

"Numbers, Facts, and Trends Shaping [our] World." PEW is the most reliable, objective source for macro research I know of; use and feel welcome to cite this source for factual information.

The autism spectrum or autistic spectrum describes a range of conditions classified as pervasive developmental disorders in the Diagnostic and Statistical Manual of Mental Disorders (DSM). Pervasive developmental disorders include autism, Asperger syndrome, pervasive developmental disorder not otherwise specified (PDD-NOS), childhood disintegrative disorder, and Rett syndrome, although usually only the first three conditions are considered part of the autism spectrum.