二00七年間，美國次級房屋信貸問題逐日惡化，伴隨著投資者對於抵押證券價值的信心盡失，終在二00八年引發全球性的金融危機。即便多國中央銀行和政府履次向金融市場投入巨額資金救援，也無法遏止此危機的發生及逐漸惡化。二00八年間，金融風暴導致許多跨國知名金融機構逐一倒閉、被政府接管或扛下鉅額負債，並伴隨了維持數年的全球性經濟衰退。即便至今已有不少學者針對二00八金融海嘯進行深入研究，卻少有研究使用應用語言學中語料庫研究的方式，探討特定辭彙與此重大事件的相互關係。本研究旨在研究美國經濟走勢及重點財經期刊中關鍵字「風險」出現頻率之關聯，以及藉由金融風暴發生前後相關特定詞彙使用之比較探究風險相關議題。為此，本研究自十本極具聲望的財經期刊中擷取了一千篇學術文章，即各自擷取自二00三至二0一二發表的一百篇期刊文章之意，並用二00八金融風暴為分界，建立兩個研究所需之語料庫。此語料庫的建立之本在於探討重大金融事件發生之時空背景及辭彙使用之比較。研究中的分析工具採用Wordsmith 5.0進行量化分析，包括：字詞頻率、詞語索引、關鍵字分析及統計數據。此外，本研究亦採用質化分析之辦法，以Lexical grammatical profile為本，探究研究語料庫中，風險相關詞彙之使用於金融風暴前後的比較呈現。研究結果顯示美國GDP成長率走勢與關鍵字「風險」之出現頻率有相互影響關係。在質化分析中，風險相關詞彙在數量上於金融風暴前後有明顯不同，而量化分析的結果顯示在所摘選的一千篇財經相關期刊論文中，發現於金融風暴前後探究風險相關辭彙的運用上，有明顯的相異及特殊的相聯性。本研究意旨提供重大經濟議題中具效率及實用的解決或預測方法，研究者也衷心期望此研究能提供金融專家、政府官方和金融風險控管單位作為其一參考，以穩定全球經濟走向和迴避高風險為出發點，進一步擴展至全球經濟脈動穩健與和諧之增長。

The global financial crisis since 2008 as the core of U.S. economic collapse and elsewhere has doubtlessly the most distinctive economic event of the late 2000s. For example, the American subprime crisis has severely affected American banks and the repercussions of the credit crunch have reached every corner of the world. Notwithstanding the importance of such large-scale economic phenomena, there has been little research on the discursive construction behind this crisis. Therefore, this research tries to carry out a study of economic crisis and to examine its formulaic expressions in the economics journal. That is, this study aims to investigate the distribution, collocation in economics research articles. The current study demonstrates how the risk is identified and its boundaries construed in academic economics perceptions in terms of corpus-based approaches (CBA). The corpus of 1,000 research articles (11,452,308 running words) were constructed and collected from ten prestigious economics and finance journal articles from 2003 to 2012. The analytical instruments, Wordsmith 5.0, were adopted for the quantitative analysis. From the analysis of relation between U.S. GDP growth rate and the frequency distribution of risk, the results show that when GDP growth rate is ready either to drastically decline or reach a peak in the next year, the frequencies of the target term “risk” will have a significant difference. And form the high frequency negative words collocational patterns investigation, the findings shows that there isn’t significant difference within the frequencies before or after the financial crisis. However, the present study find the crucial different language usage before and after the financial crisis. Based on the results from the research, the researcher highlights the significant collocates usage between these two time span which also to some extent reflect the economic situation at then. The present study explore the term “risk” in academic economic and finance perception. First, results of the wordlists before and after the financial crisis may serve a reference for specialists in finance and economic fields intending to analyze risk-related outlook of historical incident. Next, results of collocational patterns analysis from academic economic and finance perspective may be a guide for analyzing the specific lexical items changing from a long span of time which could also serve as research data to the 2007 economic crisis, which the researcher hope to shed lights on the analysis of critical financial crisis from past to future.

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