This book, “Introduction to Criminology: Its Nature, Concept and Scope of Study” is designed to provide students, practitioners, and anyone interested in criminology with a comprehensive overview of the field. It covers a wide range of topics, including the history of criminology, theories of crime causation, types of crime, the criminal justice system, and the role of the criminologist in society.

Criminal Investigation and Intelligence are multifaceted, problem-solving challenge. Arriving at the scene of a crime, an officer is often required to rapidly make critical decisions, sometimes involving life and death, based on limited information in a dynamic environment of active and still evolving events. After a criminal event is over, the investigator is expected to preserve the crime scene, collect the evidence, conduct surveillance operation and devise an investigative plan that will lead to the forming of reasonable grounds to identify and arrest the person or persons responsible for the crime. To meet these challenges, police investigators, through training and experience, learn investigative processes to develop investigative plans and prioritize responses.

The content of this textbook aligns seamlessly with the curriculum for the Bachelor of Science in Criminology as prescribed by the Commission on Higher Education, as outlined in CHED Memorandum Order No. 5, Series of 2018, titled “Criminal Justice Education: Policies and Standards for Criminology Program.” Additionally, the contents adhere to the Table of Specification (TOS) mandated by the Professional Regulation Commission (PRC).

This book was conceived to help students of Criminal Justice Education assess their strengths and weaknesses and reinforce their study towards outcomes based Criminology Education. For reviewees in preparing Criminology Licensure Examination this may serve as a useful tool to equip and increase the likelihood of a successful and fruitful result in either passing or topping the examination.

This handbook is designed to help aspiring Criminologists to pass and even top the board examination without the expense of attending regular review classes and without paying a significant amount of money. Non‐Criminologists can also maximize the use of this handbook as it also provide questionnaires for the PNP Entrance Examination. Moreover, in‐service PNP personnel who will be due for promotion can likewise make use of this handbook. This piece of work also provides references that can be useful in the daily work of police officers.

This book is intended to equip the students with sufficient knowledge of fundamental principles in examination of questioned documents. Likewise, it comprises topics on the traditional and modern way of examination of suspected disputed documents that would lend the students verse of knowledge and ideas on the different angles and aspects of the examination.

This instructional material is designed to equip Criminology students with sufficient knowledge on the concepts of planning as a basic requirement in all types of operations of selected Law Enforcement and Public Safety Agencies and the respective legal mandates and limitations under existing laws.

This book is compendious of topics, lessons, principles, related laws and issuances in the Philippine National Police (PNP). Much of the contents are products of the authors’ researches and others are from the notes and readily available or open-source references. Commentaries and insights from the authors’ decade-long experiences in the academe, legal profession, and law enforcement formed part of the book.