Abbreviations and acronyms should be spelled out at their first mention unless they are commonly used as words (e.g. "IQ").
Equations in the text should be numbered using consecutive Arabic numerals in parentheses at the right margin.
In-text citations should include the last name of the author(s) the year of publication and page numbers (when quoting directly from a work or referring to specific passages). If the author’s name is in the text follow it with the publication year in parentheses. Example: "…in a study by Binder (2010)." If the author’s name is not in the text enclose the last name and publication year in parentheses. Example: "...whenever it occurred (Bills 2004)." Pagination follows the year of publication after a colon with no space between the colon and the page number. Example: "...according to Fomby (2005:71)." Give both last names for joint authors. Example: "... based on prior evidence (Grodsky and Muller 2009)." If a work has three authors cite all three last names in the first citation in the text; thereafter use et al. in the citation. If a work has more than three authors use et al. throughout. Example: "...obtained the same results (Liebler Ruggles and Fitch 2007; Hauser et al. 2008). However ... (Liebler et al. 2007)." Separate a series of references with semicolons and list the series in alphabetical or date order (but be consistent throughout the manuscript). Example: "…for more information (Park 2006; Schofer 2009)."