forwarded post form progressive sociologists network

John O'Brien (JOBRIEN@UCS.INDIANA.EDU)
Sun, 19 Jun 1994 18:25:26 EST

THERE IS NEW RESEARCH REPORTED WHICH SHOULD BE OF CONSIDERABLE INTEREST TO
THOSE IN SOC/MED, SOC PROBS, METHODOLOGY AND POSTMODERN PHIL/SCI. A REEARCH
TEAM LEAD BY DR. PATRICIA HAMILTON, TEXAS WOMAN'S UNIVERSITY, REPORTS THE
SUCCESSFUL USE OF NEW ANALYTIC PROCEDURES FROM MATH AND PHYSICS IN THE
DISCOVERY OF A HIDDEN ATTRACTOR IN A VERY LARGE DATA SET. USING TECHNIQUES
WHICH ASSUME LINEARITY, TIMES SERIES DISPLAYS APPEAR TO BE VERY ERRATIC
AND CAUSALITY LOOSE OR MISSING. USING SPECTRAL DENSITY ANALYSIS, SINGULAR
VALUE DECOMPOSITION THE TEAM FOUND TWO DISTINCT PATTERNS IN THE PERIODS OF
DATA ABOUT TEENAGE PREGNANCIES. ONE CYCLE WAS PRODUCED BY FOUR FACTORS;
A SECOND, LONGER CYCLE BY 7 FACTORS.