CPD Investigation & Evidence 4

Question 1

An officer responds to a domestic battery call and observes fresh injuries on the victim. The victim refuses to make a statement. The officer should:

Accepted Answer

Document observations, collect available evidence, and arrest if probable cause exists regardless of victim cooperation

Answer

In Illinois, officers may arrest for domestic battery on probable cause alone without victim cooperation under mandatory arrest policies.

Question 2

Which type of lineup procedure is considered least susceptible to suggestibility bias?

Accepted Answer

Sequential blind administration by an officer unaware of the suspect's identity

Answer

Sequential blind lineups reduce suggestibility because neither the officer nor the witness can inadvertently influence identification.

Question 3

The 'exclusionary rule' established in Mapp v. Ohio means that:

Accepted Answer

Evidence obtained in violation of constitutional rights is generally inadmissible in criminal proceedings

Answer

Mapp v. Ohio applied the exclusionary rule to the states, barring illegally obtained evidence from criminal trials.

Question 4

A suspect voluntarily speaks to an officer on the street without being detained. The officer does NOT need to give Miranda warnings because:

Accepted Answer

The person is not in custody and can leave at any time

Answer

Miranda applies only to custodial interrogation; a voluntary, non-custodial conversation does not trigger its requirements.

Question 5

Which of the following is an example of exculpatory evidence that must be disclosed to the defense under Brady v. Maryland?

Accepted Answer

A witness statement indicating the defendant was at another location at the time of the crime

Answer

Brady requires the prosecution to disclose any evidence favorable to the defense, including alibi-supporting witness statements.

CPD - Chicago Police Department Practice Test