An Experimental Design for Study of Effects of Accounting Variations in Decision Making
The research reported herein was undertaken to investigate relationships between (a) security evaluation and portfolio selection and (b) alternative inventory valuation and depreciation methods in financial reporting. First, a computer simulation model of a manufacturing firm was developed. In this simulation phase, the effects of alternative methods of financial statements and related measures (earnings per share, working capital, earnings margin, current ratio, inventory turnover, and other financial ratios along with corresponding rates of change and moving averages) were investigated under a wide range of operating conditions. In the second phase, an attempt was made to measure the effects of these accounting variations on evaluations by professional security analysts. Complete prospectuses were developed for two hypothetical companies named ETX Electronic Industries, Inc. and Rayco Electronics Corporation. Financial data for the companies were generated by the computer model. Four sets of financial reports with their related measures were generated for each company for a ten-year span. Two inventory methods (lifo and fifo) and two depreciation methods (straight-line and accelerated) were used. The four different financial reports for each company resulted m sixteen combinations of financial reports for the two companies. Participants in the study received an information packet which included an introductory letter, a return questionnaire, and one prospectus for each of the companies to be evaluated. The only variation in the in-