Analysis of information sources in references of the Wikipedia article "The Five Love Languages" in English language version.
When the love-languages concept entered the cultural lexicon, it soon attracted the interest of a handful of relationship and marriage researchers who wanted to test Chapman's claims as scientific hypotheses. Their findings have been mixed, but some researchers have found its attentiveness-plus-behavioral-change formula worthwhile.
Critics, however, point to Chapman's rigid and conservative gender politics (most prominent in the earliest editions of the book) and the lack of scientific basis for his theories. Love languages, they warn, can be too inflexible to be practical.