This research examined the development of consumer product manufacturer's liability between 1890 and 1981. h large percentage of the manufacturers were involved in monopolies, suppression of free trade, price conspiracies, and fraudulent advertisments. Negligence in design and manufacture frequently resulted in defective products. Responsible writers exposed: dangerous foods; chemicals; insecticides; unethical manufacturing methods; and numerous injuries or deaths from defective consumer products. Three periods of organized consumerism, 1890-1917, 19271941; and 1962-1981, created congressional pressure for consumer-oriented legislation. Five presidents used the power of their offices to pressure congress to protect the public. The states adopted the federal Workmen's Compensation Law of 1908 to provide assistance for individuals who suffered job-related injuries or death. Additional consumer-oriented laws enabled injured workers to sue for damages through the courts. Organized women's clubs worked through industrial representatives and congress to correct flagrant manufacturing abuses and establish standards.

In September 1979, the Financial Accounting Standards Board (FASB) issued a statement entitled Financial Reporting and Changing Prices (FASB No. 33). FASB No. 33 requires publicly-held companies of a certain size to issue supplementary constant dollar and current cost disclosures along with their primary financial statements.To investigate the effect of the signals on security prices the study used a methodology known as "Iso-beta Portfolio Analysis" and employed different models in conjunction with the methodology, the market model (MM) and a new model called "the multi-index model" (MIM). Cluster analysis was used to develop the indexing used with the MIM.