The objectives of this study are (1) to investigate the relationship between childhood abuse and dissociative experiences in both psychogenic movement disorders (PMD) and non-epileptic seizures (NES) and (2) to investigate the relationship between childhood abuse and both PMD and NES. The secondary objective of the study is to investigate if measures of response inhibition differ between PMD subjects compared to normal controls. This study is part of a larger study investigating the psychological and biological correlates of conversion disorder.