現代科學對風水最大的質疑，在信度與效度。就效度而言，好風水環境與壞風水環境是否有可客觀測量的實質差異？韓可宗、洪瑞嬣（2008）的期刊論文記載臺灣九個好風水與九個壞風水的地點，本研究針對這18個風水環境接續進行驗證，探索經風水專家判定為吉凶的地點，是否真的有可量化量測的實質差異。本研究運用現地勘察與二手資料，比較好風水與壞風水在地形特徵、土壤、氣象、負離子、磁場、電磁波之差異。統計分析包含卡方檢定、獨立樣本t檢定、單因子變異數分析、效應值。結果顯示：好風水與壞風水環境的地形特徵（龍穴至青龍、玄武、溪流等距離；溪流寬度；青龍山量體與白虎山量體比值）、氣象狀況（平均氣壓、相對濕度）以及負離子含量有所不同。這些實質差異符合風水的論說，也對居住環境、趨吉避凶有影響。因此或可初步推論：風水並非全然沒有任何效用。

The reliability and validity of Feng Shui has been questioned by modern sciences. In terms of validity, are there measurable physical differences between good and bad Feng Shui environments? Han and Hong (2008) documented 9 good and 9 bad Feng Shui sites in Taiwan. This study further examined if there were any measurable physical differences between these environments, which had been validated by Feng Shui experts. This study utilized site inventories and second-hand information to examine geographical features, soils, meteorology, negative ions, magnetic fields, and electromagnetic waves. Statistical analyses included X^2 tests, independent t tests, one-factor ANOVAs, and effect sizes. The results indicated that there were differences between the good and the bad Feng Shui environments in the geographic features (distances from Xue to Ging Long, Xuan Wu, and the river; the width of the river; and the ratio of Ging Long to Bai Hu), meteorology (barometric pressure and humidity), and negative ions. These physical differences were congruent with Feng Shui theories and were influential with living quality and human well-being. Therefore, it could be preliminarily concluded that Feng Shui was not completely without any validity.