Sexual behaviors in children are common, and may range from normal and developmentally appropriate to abusive. These behaviors may include self-stimulation, interest in sex, curiosity about their own or other genders, exhibitionism, voyeurism, gender role behaviors, and engagement in interpersonal sexual acts.
Kurt Freund was a Czech-Canadian physician and sexologist best known for developing the penile plethysmograph, research studies in pedophilia, and for the "courtship disorder" hypothesis as a taxonomy of certain paraphilias. After unsuccessful attempts to change men's sexual orientation, he advocated against conversion therapy and in favor of the decriminalization of homosexuality.
Penile plethysmography (PPG) or phallometry is a measurement of blood flow to the penis, typically used as a proxy for measurement of sexual arousal. The most commonly reported methods of conducting penile plethysmography involves the measurement of the circumference of the penis with a mercury-in-rubber or electromechanical strain gauge, or the volume of the penis with an airtight cylinder and inflatable cuff at the base of the penis. Corpora cavernosa nerve penile plethysmographs measure changes in response to inter-operative electric stimulation during surgery. The volumetric procedure was invented by Kurt Freund and is considered to be particularly sensitive at low arousal levels. The easier to use circumferential measures are more widely used, however, and more common in studies using erotic film stimuli. A corresponding device in women is the vaginal photoplethysmograph.
Forensic psychology is the application of scientific knowledge and methods to assist in answering legal questions that may arise in criminal, civil, contractual, or other judicial proceedings. Forensic psychology includes research on various psychology-law topics, such as: jury selection, reducing systemic racism in criminal law, eyewitness testimony, evaluating competency to stand trial, or assessing military veterans for service-connected disability compensation. The American Psychological Association's Specialty Guidelines for Forensic Psychologists reference several psychology sub-disciplines, such as: social, clinical, experimental, counseling, and neuropsychology.
Offender profiling, also known as criminal profiling, is an investigative strategy used by law enforcement agencies to identify likely suspects and has been used by investigators to link cases that may have been committed by the same perpetrator. The originator of modern profiling was FBI agent Robert Ressler. He defined profiling as the process of identifying all psychological characteristics of an individual and forming a general description of their personality based on an analysis of crimes they have committed.
A sex offender is a person who has committed a sex crime. What constitutes a sex crime differs by culture and legal jurisdiction. The majority of convicted sex offenders have convictions for crimes of a sexual nature; however, some sex offenders have simply violated a law contained in a sexual category. Some of the serious crimes which result in a mandatory sex-offender classification are sexual assault, statutory rape, bestiality, child sexual abuse, incest, and rape.
Pedophilia is a psychiatric disorder in which an adult or older adolescent experiences a primary or exclusive sexual attraction to prepubescent children. Although girls typically begin the process of puberty at age 10 or 11, and boys at age 11 or 12, psychiatric diagnostic criteria for pedophilia extend the cut-off point for prepubescence to age 13. People with the disorder are often referred to as pedophiles.
Psychopathy, or psychopathic personality, is a personality construct characterized by impaired empathy and remorse, in combination with traits of boldness, disinhibition, and egocentrism. These traits are often masked by superficial charm and immunity to stress, which create an outward appearance of apparent normalcy.
Sibling abuse includes the physical, psychological, or sexual abuse of one sibling by another. More often than not, the younger sibling is abused by the older sibling. Sibling abuse is the most common of family violence in the US, but the least reported. As opposed to sibling rivalry, sibling abuse is characterized by the one-sided treatment of one sibling to another.
The Psychopathy Checklist or Hare Psychopathy Checklist-Revised, now the Psychopathy Checklist—revised (PCL-R), is a psychological assessment tool that is commonly used to assess the presence and extent of psychopathy in individuals—most often those institutionalized in the criminal justice system—and to differentiate those high in this trait from those with antisocial personality disorder, a related diagnosable disorder. It is a 20-item inventory of perceived personality traits and recorded behaviors, intended to be completed on the basis of a semi-structured interview along with a review of "collateral information" such as official records. The psychopath tends to display a constellation or combination of high narcissistic, borderline, and antisocial personality disorder traits, which includes superficial charm, charisma/attractiveness, sexual seductiveness and promiscuity, affective instability, suicidality, lack of empathy, feelings of emptiness, self-harm, and splitting. In addition, sadistic and paranoid traits are usually also present.
Sexual violence refers to a range of completed or attempted sexual acts in which the affected party does not or is unable to consent. Theories on the causes of sexual violence are numerous and have come out of many different disciplines, such as women's studies, public health, and criminal justice. Proposed causes include military conquest, socioeconomics, anger, power, sadism, traits, ethical standards, laws, and evolutionary pressures. Most of the research on the causes of sexual violence has focused on male offenders.
Child sexual abuse (CSA), also called child molestation, is a form of child abuse in which an adult or older adolescent uses a child for sexual stimulation. Forms of child sexual abuse include engaging in sexual activities with a child, indecent exposure, child grooming, and child sexual exploitation, such as using a child to produce child pornography.
A range of research has been conducted examining the link between viewing child pornography and perpetration of child sexual abuse, and much disagreement persists regarding whether a causal connection has been established. Perspectives fall into one of three positions:
David Lisak is an American clinical psychologist. He received his PhD from Duke University, and is a retired associate professor of psychology at the University of Massachusetts Boston. Lisak's research focuses on "the causes and consequences of interpersonal violence...motives and behaviors of rapists and murderers, the impact of childhood abuse on adult men, and relationship between child abuse and later violence".
Paradox psychology is a counter-intuitive approach that is primarily geared toward addressing treatment resistance. The method of paradoxical interventions (pdxi) is more focused, rapid, and effective than Motivational Interviewing. In addressing resistance, the method seeks to influence the clients' underlying attitude and perception by providing laser beam attention on strengthening the attachment-alliance. This is counter-intuitive to traditional methods since change is usually directed toward various aspects of behavior, emotions, and thinking. As it turns out, the better therapy is able to strengthen the alliance, the more these aspects of behavior will change.
The Children's Depression Inventory is a psychological assessment that rates the severity of symptoms related to depression or dysthymic disorder in children and adolescents. The CDI is a 27-item scale that is self-rated and symptom-oriented. The assessment is now in its second edition. The 27 items on the assessment are grouped into five major factor areas. Clients rate themselves based on how they feel and think, with each statement being identified with a rating from 0 to 2. The CDI was developed by American clinical psychologist Maria Kovacs, PhD, and was published in 1979. It was developed by using the Beck Depression Inventory (BDI) of 1967 for adults as a model. The CDI is a widely used and accepted assessment for the severity of depressive symptoms in children and youth, with high reliability. It also has a well-established validity using a variety of different techniques, and good psychometric properties. The CDI is a "Level B test," which means that the test is somewhat complex to administer and score, with the administrator requiring training.
'Mary P. Koss is an American Regents' Professor at the Mel and Enid Zuckerman College of Public Health at the University of Arizona in Tucson, Arizona. She is a renowned expert in sexual violence research. She is best known for conducting the first national study on rape in the United States in 1987 and for developing the Sexual Experience Survey (SES), which remains widely used today to assess sexual aggression and victimization.
Karen Franklin is an American forensic psychologist. For her doctoral dissertation, she conducted research on anti-gay violence. She has also published commentaries about sex crimes, primarily expressing her opposition to the use of the hebephilia and other diagnoses in sexually violent predator regulations. She received the 2012 Distinguished Scientific Achievement Award in Psychology and the Monette-Horwitz Trust Award in 2001.
Raymond A. Knight is a psychologist and academic most known for his research on schizophrenia and on aggressive behavior, particularly sexual aggression, psychopathy, and bullying, exploring their causes, life course, and outcomes, and for developing the Multidimensional Inventory of Development, Sex, and Aggression (MIDSA) that assesses treatment targets for those who have sexually offended. He is a professor emeritus of Human Relations at Brandeis University.
Amanda M. Fanniff is an American clinical psychologist who is an Associate Professor of Psychology and the Faculty Senate Chair at Palo Alto University's Pacific Graduate School of Psychology. Fanniff is also a clinical psychologist. At Palo Alto University, she is affiliated with the Developmentally Informed Policy and Practice Research Lab. Her research addresses forensic mental health assessment, legal system processing, and the influence of sociocultural identities.
