Kyra's problem is most likely due to interference.
Interference occurs when some information interferes with the ability to remember other information. There are two types of interference: proactive interference and retroactive interference.
Proactive interference occurs when previously learned information interferes with the ability to remember new information. Retroactive interference occurs when newly learned information interferes with the ability to remember previously learned information.
In Kyra's case, she is experiencing interference between the concepts and theorists she learned in psychology and sociology. This is likely because the concepts and theories in the two fields are similar and may overlap to some extent. As a result, Kyra may have difficulty recalling the major psychological theorists because she is getting them confused with sociological theorists.
This is an example of proactive interference because the previously learned information from psychology (the concepts and theorists) is interfering with the ability to remember new information from sociology (the concepts and theorists).