Graphology International Graphoanalysis Society (IGAS) were expelled between 1970 and 1980. Regarding a proposed correlation between gender and handwriting style, a paper by published by James Hartley in 1989 concluded that there was some evidence in support of this hypothesis. Although graphology had some support in the scientific community before the mid-twentieth century, more recent research rejects the validity of graphology as a tool to assess personality and job performance. Today it is considered to be a pseudoscience. Graphology is primarily used as a recruiting tool to screen candidates during the evaluation process. Many studies have been conducted to assess its
What Is and What Should Never Be descending riff [of "What Is and What Should Never Be"] is amazing: It's like a bow is being drawn back, and then it releases. The rhythm of the vocals is almost like a rap. It's insane — one of their most psychedelic songs." This was also one of the first songs recorded by the band for which Robert Plant received writing credit. According to rock journalist Stephen Davis, the author of the Led Zeppelin biography "Hammer of the Gods: The Led Zeppelin Saga", the lyrics for this song reflect a romance Plant had with his wife's younger sister. "What Is