Sulfur exists in two allotropic forms. Allotropes are forms of an element with different physical and chemical properties. The two forms of sulfur are known as Î±-form and Î²-form (the Greek letters alpha and beta, respectively).
National Organizations American Psychological Association (APA) The American Psychological Association (APA) is located in Washington, D.C., and is the largest scientific and professional organization representing psychology in the United States. APA was founded at the turn of the 20th century, and is the world's largest association of psychologists. APA - Division 16 - Division of School Psychology
Psychology at Work. What Do I-O Psychologists Really Do? Sometimes one of the most difficult things for Industrial-Organizational (I-O) psychologists to explain to non-I-O psychologists is what exactly it is that they do. The field of I-O psychology is, in fact, a varied one, encompassing almost any aspect of the workplace and people within organizations.