Explaining false memory has been a strong resource to understand how memory works in general. More than two decades of research on false memories show that false memories are a complex phenomenon that made most of the established theories of memory insufficient. Phantom recollection is a specific part of the false memory phenomena that consists of a memory illusion in which subjects have a false recollective phenomenology that resembles true recollections. Two experiments following DRM's paradigm served to study phantom recollection in adults, manipulating variables such as Level of processing, Type of voice, Retrieval time and Repetition. The three proper instructions of a mathematical model named Conjoint Recall were applied in order to have separate measures of the phantom recollection manifestations. Ninety American and 90 Mexican university students participated. The results of the experiments disconfirm IAR explanations of phantom recollection, but confirm most of Fuzzy-trace-theory's assumptions on this phenomenon (Brainerd, Payne, Wright, and Reyna, 2003).