Definitions and recording rules for use in observing parent/child interaction are stipulated in this codebook. Settings and behaviors of focal concern are those associated with the type and amount of instruction provided by parents to children. Definitions are established for setting, parent behavior and child behavior variables. The four "settings" (types of interactions) defined are instructional training, free play, high instruction, and independent play. Parent behaviors defined are task-relevant instruction, physical abuse, parent attention, positive verbal statements, time out instruction and withholding of attention. Child behaviors defined are appropriate or inappropriate child behavior and aggression. Rules are given for recording parent and child behavior, including the use of coding symbols. The rules stipulate when and how observations are to be made. For example, "Using a stopwatch, the observer will simultaneously record parent and child behaviors in consecutive blocks of 10 seconds. The recording will be on a double grid. A behavior will be recorded in the interval in which it occurs. A behavior may be scored only once per interval with the exception of parent attention (0), which may be recorded once to each child behavior recorded in any single interval." (Author/RH)