Our primary interest in the reliability and validity of the TSPD was as a measure for distinguishing between those who had achieved at least Stage 5 (late adolescence) and those who had not.
The TSPD (Taylor, 2000) presented in Study 1 was used as a measure of psychosocial development.
Upon agreeing to participate in the study, each veteran received a packet consisting of the university and the federal informed consent materials and the MAST, DTS, DIT, and TSPD instruments, which the veteran thereupon completed after an instructional briefing and submitted to the researcher or his or her representative.
In this analysis, the group means of the PTSD-diagnosed participants on the TSPD were compared with the norms set for Erikson's (1963) Stages 5, 6, and 7 in the first experiment.
The findings indicated significant differences between the PTSD-diagnosed and PTSD-free veterans across all three stages of the TSPD, with the PTSD-free group means being higher in each instance.
First, the TSPD (Taylor, 2000), being a new instrument, may foster studies of its psychometric properties or may be used as a measure of psychosocial development in studies where that variable is of interest.
TSPD generally begins with production of a large number of candidate transgenic sources, or "events", for a given trait.
Only those events for which regeneration results in fertile T0 plants can be advanced further in TSPD. Characterization of events in terms of the number of chromosomal insertion sites and the general structure and complexity of each (e.g., the number of copies of introduced genes or portions thereof, and orientation) is often initiated with the T0 or the T1 (first generation after transformation) generation.
The tests result in a stepwise reduction in the number of events advanced through TSPD, enabling effective resource allocation to the events with the greatest commercial promise.
However, to hasten TSPD and focus on the most commercially promising events, seed produced at any or all generations in the conversion procedure is often used for evaluations.
Clearly, the division of labor and technical specialization necessary for successful TSPD within a seed company mandates a high level of coordination and communication between the functional teams involved to ensure that product development goals are approached effectively.
The primary goal of QC in TSPD is to ensure the transgenic composition of seed materials advanced through Biotech Trait Development and Biotech Breeding, and seed materials forwarded to other functional teams within the company.