Complex sentence: UFOlogist Stanton T. Friedman criticized Park for inconsistencies in his dates and accounts of Roswell, New Mexico's history as a site of interest to UFOlogists and for engaging in amateur psychology in making his arguments.
Split into simpler sentences: UFOlogist Stanton T. Friedman criticized Park for inconsistincies in his dates and accounts of Roswell, New Mexico's history as a site of interest to UFOlogists. He also accused Park of engaging in amateur psychology in making his arguments.