Which of the following should not be included in the written investigative report of an applicant?

In the context of a written investigative report regarding an applicant, confidential sources of information should generally not be included. This is primarily due to the need to protect the identity of sources who may provide sensitive or crucial information while maintaining their confidentiality. Including such information could compromise the integrity of the investigative process and discourage future sources from coming forward.

The confidentiality of sources is a critical aspect of many investigative and reporting processes, as it ensures that informants or witnesses feel safe to share information without fear of retribution. Their anonymity is essential for the reliability and honesty of the information provided.

In contrast, while derogatory information, results from a lie detector examination, and arrest records can also be sensitive, they are typically included in reports because they can be verified and are relevant to the evaluation of an applicant's background or character. These elements are part of standard background checks and assessments necessary for making informed decisions about an individual's suitability for a position.