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• Sacrifice or DYAT Question - designed to uncover the subject’s attitude, cooperation towards the test. (Ex: Do you mind to answer truthfully all questions about that?) ​
• Knowledge or DYK - designed to probe whether the subject possess information regarding the identity of the offender, the location of the evidence or other necessary elements of the case facts. (Ex: Do you know for sure who stole the missing assorted jewelries of Ms. Ana?) ​
• Evidence-Connecting Questions - a question about some specific piece of evidence found at the scene of the crime, to focus the subject’s attention on the probability of incriminating proof that would establish his guilt. (Ex: Was the evidence found at the crime scene yours?)​
• LTQ Question - a question used for protection against loss of psychological control as approaching the end of the question series. (LTQ- Lied to any Question)​
• The Primary Control Question - is based on known lie. It must concern about events that transpired within three to five years period before case under investigation occurred. (Ex: “Before reaching the age of 20, have you ever stolen anything?) ​
• The Secondary Control Question - is more specific in nature and is based on another experience or wrongdoing. This will enhance the opportunity for responsiveness. It scope covers up to the present period. (Ex: “Have you ever committed any crime in your community?”​
• Symptomatic Questions - a question that relates about the subject trust in the examiner regarding confinement to the original issue under investigation. (Ex: Are you now convinced that I will not ask you any question aside from these we have reviews? Or Are you afraid that I will ask you about something else which I told you I would not?) Purpose: To ascertain presence of subject’s hidden fears or apprehension unrelated to the issue.​
• SKY Question - these are three (3) question groups together and used only on the fourth chart in Backster Zone Comparison Test. S= Suspect, K= Know, Y= You. (Ex: “Do you SUSPECT anyone in particular in stealing Ana’s money? Do you KNOW who stole Ana’s money? “Did YOU steal Ana’s money?)​

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  Purpose:  To confirm specific response from previous charts taken. ​

  •              To detect indirect/ direct involvement or guilty knowledge. ​
• TEST 3 - SPOT RESPONDER TEST​

  • This test contains previously asked questions in General Question Test. With the number corresponding to the number of the question on the earlier test, the mixture would be​
• TEST 3- SPOT RESPONDER TEST​

  • Purpose: To determine the responsiveness of the subject to crucial questions and also serve as a check on possibility of spot respond​
• TEST 4 - MIXED QUESTION TEST ​

  • The Question of General Question Test is again mixed and the mixtures of the questions are as follows: ​
• TEST 4 - MIXED QUESTION TEST ​

  • Purpose: To compare the degree of reaction between Relevant and Control Questions ​
• TEST 5 - SILENT ANSWER TEST​

  The subject is instructed to refrain from giving any audible answer. The subject is told to listen to each test question and to answer only to himself, silently. Moreover he is to think of the truthful answer and give that truthful answer to himself, but silently. ​
• TEST 5 - SILENT ANSWER TEST​

  • Purpose: To serve as a confirmatory check​
• ZONE COMPARISON TEST​

  • This test is alternatively known as Zone of Comparison test, it is the polygraph technique most commonly used for polygraph interrogation concerning a single issue, and it is used especially in criminal investigations. ​
• ZONE COMPARISON TEST​

  • Purpose: To serve as a confirmatory check​
• Supplementary Test​

           Aside from the standard test described above, the following special tests may be performed and incorporated as a part of the standard procedure or may be used as supplementary tests depending upon the result of the standard test in order to draw a better conclusion. ​

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• Yes Test - is conducted by instructing the subject to say “Yes” to all the questions to be asked, including to those pertaining to the matter under investigation. 
• Guilt Complex Test - in the response on the previous test is doubtful, it becomes necessary to conduct additional test. This consists of a test regarding fictitious incident of a similar nature but one which appears be real in so far as the subject is concerned.​
• Peak-of–tension-test - the subject may be given this test if he is not yet informed of the detail of the offense for which he is being interrogated by the investigator, or by other persons or from other sources like the print media. ​
• Silent Answer Test - this is a confirmatory test because the subject is afraid of the unfamiliar and the unknown. It is an examination in which the subject is instructed by the examiner to avoid audible response to the questions asked.