Final answer:
The provided information does not specify the number of individuals the International Association of Chiefs of Police recommends for a lineup. Additional research is required to answer this question accurately.
Step-by-step explanation:
The question you are asking about the International Association of Chiefs of Police relates to the recommended number of individuals in a police lineup. However, the information provided does not include the specific number the Association recommends for a lineup. It does, however, provide details on the sizes of certain groups, such as a recommendation by the International Association of Counseling Services on staff-to-student ratios, and police employment statistics. To give an accurate response about the recommended number of individuals in a lineup according to the International Association of Chiefs of Police, additional research beyond the provided references would be necessary.