請問英文論文摘要裡的一段英文句子翻譯? 論文標題為:Does board gender diversity improve the informativeness of stock prices? 董事會的性別多元可否提升股票價格的資訊內涵？

要翻譯的句子為: The results are robust to alternative specifications of informativeness and gender diversity and to sensitivity tests controlling for time-invariant firm characteristics and alternative measures of stock price informativeness.

以及~ We also find that gender diversity improves stock price informativeness through the mechanism of increased public disclosure in large firms and by encouraging private information collection in small firms.

提供一些關於資訊內涵(informativeness)的概念: Beaver（1968）與Ball and Brown（1968）首先提出資訊內涵(informativeness)的概念，其最早被運用在財務會計的研究上。Beaver 定義資訊內涵為：若公司的一項新資訊可以改變投資者對該公司股票未來報酬的預期，進而造成市場均衡價格的改變，則該資訊即可稱為具有效性，或具有資訊內涵。  Grossman and Stiglitz（1980）對資訊內涵的定義則為：正式或非正式資訊，具有幫助區分與建立證券新價值者，即具有資訊內涵。