Complex sentence: Brigitte Jordan has contributed to the field of Anthropology by opening her own consulting practice where she held appointments as the Principal Scientist at the Xerox Palo Alto Research Center and as Senior Research Scientist at the Institute for Research on Learning.
Split into simpler sentences: Brigitte Jordan has contributed to the field of Anthropology by opening her own consulting practice. In her practice she held appointments as the Principal Scientist at the Xerox Palo Alto Research Center and as Senior Research Scientist at the Institute for Research on Learning.