Topics: Developmental psychology / Pages: 4 (792 words) / Published: Oct 21st, 2013
Using the Internet, locate TWO life facts or research facts not stated in the textbook about EACH the following theorists: Jean-Jacques Rousseau, John Locke, John B. Watson, G. Stanley Hall, Arnold Gessell, Sigmund Freud, Erik Erikson, Jean Piaget, Urie Bronfenbrenner, and Lev Vygotsky.

Jean-Jacques Rousseau
1. “Rousseau's conversion to Catholicism had rendered him ineligible for his hereditary status as Citizen of Geneva”
2. “Rousseau's writings on language and languages are contained in two places, the unpublished Essay on the Origin of Languages and in a section of the Discourse on the Origins of Inequality.”
Jean Jacques Rousseau (Stanford Encyclopedia of Philosophy). (n.d.). Stanford Encyclopedia of Philosophy. Retrieved June 21, 2013, from
John Locke
1. “1660 Locke meets Robert Boyle, the chemist, who was to be his friend and correspondent for thirty years. Locke writes his first treatise on the Civil Magistrate.”
2. “1696 A Board of Trade established and Locke appointed to it. The Board had a variety of duties including overseeing colonial governments. Though ill of health, Locke remained on the Board until 1700. He was its most influential member.”
John Locke. (n.d.). Oregon State University. Retrieved June 21, 2013, from
John B. Watson
1. “He wanted to use his scientific theories of behaviorism and the emotions of fear, rage, and love to improve the effects of advertising on the "animal" or what we know as consumers.”
2. According to Watson, "life's most complicated acts are but combinations of these simple stimulus- response patterns of behavior."
Watson, E. (n.d.). John B. Watson. HistoryToday. Retrieved June 21, 2013, from

G. Stanley Hall

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