Four researchers observed arraignment proceedings and collected data on 999 cases over the 6-month period. The release-on-recognizance decision and the bail amount were analyzed separately in order to determine whether different factors influenced these two aspects of the arraignment decision. In addition to data and analyses on these factors, this report also provides data and information on case and defendant characteristics as well as attorney requests and arguments. The most significant finding was that the prosecutor's bail request was the strongest predictor of both ROR and the amount of bail set, particularly the latter. Arguments made by the defense had little or no effect on either ROR or bail amount. Judicial variability made a significant difference in both the ROR and the bail analyses, except for cases that involved a first arrest. 22 tables, 2 figures, 55 references, and appended supplementary methodological information and exhibits