Purchase, Pooling, and Equity Analysts' Valuation Judgments
研究发现分析师对股价的判断受企业合并会计方法及合并后年数影响；购买法下摊销商誉时，合并时间越久估值越低，但FASB的损益表格式改革可缓解此效应。
We provide evidence that analysts' stock-price judgments depend on (1) the method of accounting for a business combination and (2) the number of years that have elapsed since the business combination. Consistent with business-press reports of managers' concerns, analysts' stock-price judgments are lowest when a company applies the purchase method of accounting and ratably amortizes the acquisition premium. The number of years since the business combination affects analysts' price estimates only when the company applies the purchase method and ratably amortizes goodwill—analysts' price estimates are lower when the business-combination transaction is further in the past. However, this joint effect of accounting method and timing is mitigated by the Financial Accounting Standards Board's proposed income-statement format requiring companies to report separate line items for after-tax income before goodwill charges and net-of-tax goodwill charges. When a company uses the purchase method of accounting and writes off the acquisition premium as in-process research and development, analysts' stockprice judgments are not statistically different from their judgments when a company applies pooling-of-interest accounting.