Graphology effectiveness to predict personality and job performance. Recent studies testing the validity of using handwriting for predicting personality traits and job performance have been consistently negative. In a 1987 study, graphologists were unable to predict scores on the Eysenck Personality Questionnaire using writing samples from the same people. In a 1988 study, graphologists were unable to predict scores on the Myers-Briggs test using writing samples from the same people. A 1982 meta-analysis drawn from over 200 studies concludes that graphologists were generally unable to predict any kind of personality trait on any personality test. Measures of job performance appear similarly
What Love Is Made Of three minutes and fifty-five seconds (3:55), "What Love Is Made Of" is an uptempo dance and house track that has been described as "rave-y" and "trance-y". Its instrumentation contains the sounds of pianos and synthesizers. Jordan Sargent of "Spin" observed that it continued the musical style first introduced in Katy's 2012 extended play (EP), "Danger EP", which was "straight-forward house". Idolator's Sam Lansky compared her performance in the song to recording artist Siobhán Donaghy. Critical response to "What Love Is Made Of" was generally positive: most critics noted Katy's vocal performance and commended its sound. Siân Rowe from "NME" was