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Allegiance bias (or allegiance effect) in behavioral sciences is a bias resulted from the investigator's or researcher's allegiance to a specific party or school of thought. [1] [2] [3] Researchers and investigators have encountered various branches of psychology and schools of thought. It is common for them to gravitate towards a school or branch that aligns with their thinking paradigm. Allegiance bias occurs when therapists, researchers, and others start to believe that their school of thought or treatment approach is superior to others. [4] Their strong belief in specific schools of thought can introduce bias into their research on effective treatment trials or investigative scenarios, resulting in allegiance bias. This bias may arise because they have focused on treatments that have shown success in their previous experiences. Consequently, this focus can lead to misinterpretations of research results. Their commitment to adhering to their established thinking paradigm could hinder their capacity to discover more effective treatments to aid patients or address the situations under investigation. [2] Moreover, allegiance bias in a forensic context can be attributed to the fact that experts are often hired by a particular party. Whether an expert witness is retained by the prosecution or defense can influence their assessment of the case, including their perception of the accused's level of guilt. [5]
“Therapeutic allegiance of the experimenter was first used by Luborsky Singer, and Luborsky" in a journal article published in 1975. [4] The basis of their study looked for comparisons among some psychotherapy practices. They found that patients fared better when combined treatments of therapies were used versus only one treatment applied. They found the strongest allegiance are those therapists who are the authors of new implemented practices or supervise others in a practice. They will tend to use their treatment more often.
Some reasons why this is occurs in psychotherapy is that there are many new therapies being implemented and researched. Supported research explains that those who develop "specific psychotherapy treatments show more interest for the evidence-based practice of their own therapies compared to others." [6]
Most often, forensic experts tend to form a biased opinion in favor of the party retaining their services, rather than maintaining objectivity based on the available evidence. Some studies have evaluated biases in legal cases and have observed that forensic psychologists may be hired by a specific party or attorney due to their preexisting attitude in favor of capital punishment. This predisposition may lead them to be more receptive to accepting capital case referrals from certain adversarial parties, indicating a partial allegiance to cases that align with their opinions. These biases have the potential to undermine justice in legal proceedings, posing a threat to our society. [7] The American Psychological Association is aware of the impact of biases and has developed guidelines to address these preexisting attitudes and biases. These guidelines aim to assist forensic psychologists in maintaining objectivity when selecting court cases. [8]
A study conducted by Sauerland, M., Otgaar, H., Maegherman, E., & Sagana, A. (2020) attempted to reduce bias through falsified instructions. Participants were provided with a case file and a letter from either the prosecution or defense, instructing them to critically evaluate both sides. However, the intervention did not yield a significant effect. Participants were still influenced by the party they were assigned to, similar to when they did not receive any instructions. The bias effect size was found to be medium. The authors emphasize the significance of cross-examination s in forensic contexts until effective interventions to mitigate allegiance bias are identified. [9]
In a study by McAuliff, B. and Arter, J. (2016), the phenomenon of allegiance bias in cases of child sexual abuse was examined. In an online study, experts were assigned to either the prosecution or defense. They were shown one of two versions of a video depicting a police interview with a 4-year-old girl, with the videos varying in the suggestibility of the interview. The experts were tasked with evaluating the interview, the child's testimony, and answering follow-up questions related to their ability to testify as experts and the specific aspects of the interview they would focus on in their testimony. The study revealed significant effects: experts were more inclined to support the prosecution's case when the interview's suggestibility was low, and conversely, they were more likely to support the defense when suggestibility was high. The researchers highlighted the importance of opposing expert testimony, cross-examination, and, in extreme cases, even the threat of prosecution as strategies to help mitigate allegiance bias. [10]
Allegiance bias is also evident when authors and researchers critique each other's work. In some cases, studies assert that a prior article validated a bias, creating a cycle of reinforcement. It is crucial to scrutinize the methods by which these authors arrive at their conclusions. They may inadvertently exhibit allegiance bias by selectively testing previous articles against their own work and overstating the conclusions they draw. Ironically, these authors may be employing allegiance bias to affirm the accuracy of their own research findings. [11]
Despite the fact that researchers find the outcomes of psychological evaluations to be influenced from allegiance from a specific school of thought, the role of allegiance in the research field should be evaluated cautiously. Several meta-analyses have shown contradictory results between experimenter's allegiance (EA) and assessment effect sizes in favor of the preferred conclusions. [6] These are meta-analysis that examines a combination of psychotherapy and non-psychotherapy treatments (e.g., medication) if it was directly compared with another type of psychotherapy or meta-analysis evaluating direct comparisons between different types of psychotherapy. Meta-analysis assessing non-verbal techniques, web-based treatments and non-specific or miscellaneous treatments (e.g., yoga, dietary advice, recreation, biofeedback, etc.) should also be excluded. [6]
The analysis on direct comparisons did not address the quality of studies and neither did it have any significant association between allegiant and non-allegiant studies; whereas significant differences were observed in cases where treatment integrity was not evaluated. [13]
In legal cases, evaluator attitudes and other attributes may systematically influence from whom evaluators are willing to accept a referral. Filtering and selection effects in adversarial settings have been assumed to exist, but with few empirical tests of the hypothesis to date. [17] [18] Current studies demonstrate that these experts have preexisting biases that may affect for whom they are willing to work in the adversarial system–thus, likely amplifying the effects of the system-induced biases when layered with preexisting expert biases.
Systematic reviews and meta-analysis are essential to summarise evidence relating to efficacy and safety of healthcare interventions accurately and reliably. The clarity and transparency of these reports, however, are not optimal. Poor reporting of systematic reviews diminishes their value to clinicians, policy makers, and other users. [23]
Since the development of the QUOROM (quality of reporting of meta-analysis) statement—a reporting guideline published in 1999—there have been several conceptual, methodological, and practical advances regarding the conduct and reporting of systematic reviews and meta-analysis. Also, reviews of published systematic reviews have found that key information about these studies is often poorly reported. [24]
Realizing these issues, an international group that included experienced authors and methodologists developed PRISMA (preferred reporting items for systematic reviews and meta-analysis) as an evolution of the original QUOROM guideline for systematic reviews and meta-analysis of evaluations of health care interventions. [25] [26]
The PRISMA statement consists of a 27-item checklist and a four-phase flow diagram. The checklist includes items deemed essential for transparent reporting of a systematic review. In this explanation and elaboration document, they have explained the meaning and rationale for each checklist item & have include an example of good reporting, while also where possible, references to relevant empirical studies and methodological literature. [27]
Cognitive behavioral therapy (CBT) is a form of psychotherapy that aims to reduce symptoms of various mental health conditions, primarily depression, PTSD and anxiety disorders. Cognitive behavioral therapy focuses on challenging and changing cognitive distortions and their associated behaviors to improve emotional regulation and develop personal coping strategies that target solving current problems. Though it was originally designed as an approach to treat depression, CBT is often prescribed for the evidence-informed treatment of many mental health and other conditions, including anxiety, substance use disorders, marital problems, ADHD, and eating disorders. CBT includes a number of cognitive or behavioral psychotherapies that treat defined psychopathologies using evidence-based techniques and strategies.
Psychotherapy is the use of psychological methods, particularly when based on regular personal interaction, to help a person change behavior, increase happiness, and overcome problems. Psychotherapy aims to improve an individual's well-being and mental health, to resolve or mitigate troublesome behaviors, beliefs, compulsions, thoughts, or emotions, and to improve relationships and social skills. Numerous types of psychotherapy have been designed either for individual adults, families, or children and adolescents. Some types of psychotherapy are considered evidence-based for treating diagnosed mental disorders; other types have been criticized as pseudoscience.
Meta-analysis is a method of synthesis of quantitative data from multiple independent studies addressing a common research question. An important part of this method involves computing a combined effect size across all of the studies. As such, this statistical approach involves extracting effect sizes and variance measures from various studies. By combining these effect sizes the statistical power is improved and can resolve uncertainties or discrepancies found in individual studies. Meta-analyses are integral in supporting research grant proposals, shaping treatment guidelines, and influencing health policies. They are also pivotal in summarizing existing research to guide future studies, thereby cementing their role as a fundamental methodology in metascience. Meta-analyses are often, but not always, important components of a systematic review.
A randomized controlled trial is a form of scientific experiment used to control factors not under direct experimental control. Examples of RCTs are clinical trials that compare the effects of drugs, surgical techniques, medical devices, diagnostic procedures, diets or other medical treatments.
In a blind or blinded experiment, information which may influence the participants of the experiment is withheld until after the experiment is complete. Good blinding can reduce or eliminate experimental biases that arise from a participants' expectations, observer's effect on the participants, observer bias, confirmation bias, and other sources. A blind can be imposed on any participant of an experiment, including subjects, researchers, technicians, data analysts, and evaluators. In some cases, while blinding would be useful, it is impossible or unethical. For example, it is not possible to blind a patient to their treatment in a physical therapy intervention. A good clinical protocol ensures that blinding is as effective as possible within ethical and practical constraints.
In published academic research, publication bias occurs when the outcome of an experiment or research study biases the decision to publish or otherwise distribute it. Publishing only results that show a significant finding disturbs the balance of findings in favor of positive results. The study of publication bias is an important topic in metascience.
Criminal psychology, also referred to as criminological psychology, is the study of the views, thoughts, intentions, actions and reactions of criminals and suspects. It is a subfield of criminology and applied psychology.
Emotional Freedom Techniques (EFT) is a technique that stimulates acupressure points by pressuring, tapping or rubbing while focusing on situations that represent personal fear or trauma. EFT draws on various theories of alternative medicine – including acupuncture, neuro-linguistic programming, energy medicine, and Thought Field Therapy (TFT). EFT also combines elements of exposure therapy, cognitive behavioral therapy and somatic stimulation. It is best known through Gary Craig's EFT Handbook, published in the late 1990s, and related books and workshops by a variety of teachers. EFT and similar techniques are often discussed under the umbrella term "energy psychology."
Eye movement desensitization and reprocessing (EMDR) is a form of psychotherapy that is a recommended treatment for post-traumatic stress disorder (PTSD), but remains controversial within the psychological community. It was devised by Francine Shapiro in 1987 and originally designed to alleviate the distress associated with traumatic memories such as PTSD.
Cognitive analytic therapy (CAT) is a form of psychological therapy initially developed in the United Kingdom by Anthony Ryle. This time-limited therapy was developed in the context of the UK's National Health Service with the aim of providing effective and affordable psychological treatment which could be realistically provided in a resource constrained public health system. It is distinctive due to its intensive use of reformulation, its integration of cognitive and analytic practice and its collaborative nature, involving the patient very actively in their treatment.
Psychodynamic psychotherapy and psychoanalytic psychotherapy are two categories of psychological therapies. Their main purpose is revealing the unconscious content of a client's psyche in an effort to alleviate psychic tension, which is inner conflict within the mind that was created in a situation of extreme stress or emotional hardship, often in the state of distress. The terms "psychoanalytic psychotherapy" and "psychodynamic psychotherapy" are often used interchangeably, but a distinction can be made in practice: though psychodynamic psychotherapy largely relies on psychoanalytical theory, it employs substantially shorter treatment periods than traditional psychoanalytical therapies. Psychodynamic psychotherapy is evidence-based; the effectiveness of psychoanalysis and its relationship to facts is disputed.
The Dodo bird verdict is a controversial topic in psychotherapy, referring to the claim that all empirically validated psychotherapies, regardless of their specific components, produce equivalent outcomes. It is named after the Dodo character in Alice in Wonderland. The conjecture was introduced by Saul Rosenzweig in 1936, drawing on imagery from Lewis Carroll's novel Alice's Adventures in Wonderland, but only came into prominence with the emergence of new research evidence in the 1970s.
Acceptance and commitment therapy is a form of psychotherapy, as well as a branch of clinical behavior analysis. It is an empirically-based psychological intervention that uses acceptance and mindfulness strategies along with commitment and behavior-change strategies to increase psychological flexibility.
A systematic review is a scholarly synthesis of the evidence on a clearly presented topic using critical methods to identify, define and assess research on the topic. A systematic review extracts and interprets data from published studies on the topic, then analyzes, describes, critically appraises and summarizes interpretations into a refined evidence-based conclusion. For example, a systematic review of randomized controlled trials is a way of summarizing and implementing evidence-based medicine. Systematic reviews, sometimes along with meta-analyses, are generally considered the highest level of evidence in medical research.
A hierarchy of evidence, comprising levels of evidence (LOEs), that is, evidence levels (ELs), is a heuristic used to rank the relative strength of results obtained from experimental research, especially medical research. There is broad agreement on the relative strength of large-scale, epidemiological studies. More than 80 different hierarchies have been proposed for assessing medical evidence. The design of the study and the endpoints measured affect the strength of the evidence. In clinical research, the best evidence for treatment efficacy is mainly from meta-analyses of randomized controlled trials (RCTs). Systematic reviews of completed, high-quality randomized controlled trials – such as those published by the Cochrane Collaboration – rank the same as systematic review of completed high-quality observational studies in regard to the study of side effects. Evidence hierarchies are often applied in evidence-based practices and are integral to evidence-based medicine (EBM).
A funnel plot is a graph designed to check for the existence of publication bias; funnel plots are commonly used in systematic reviews and meta-analyses. In the absence of publication bias, it assumes that studies with high precision will be plotted near the average, and studies with low precision will be spread evenly on both sides of the average, creating a roughly funnel-shaped distribution. Deviation from this shape can indicate publication bias.
John P. A. Ioannidis is a Greek-American physician-scientist, writer and Stanford University professor who has made contributions to evidence-based medicine, epidemiology, and clinical research. Ioannidis studies scientific research itself - in other words, meta-research - primarily in clinical medicine and the social sciences.
Compassion Focused Therapy (CFT) is a system of psychotherapy developed by Professor Paul Gilbert (OBE) that integrates techniques from cognitive behavioral therapy with concepts from evolutionary psychology, social psychology, developmental psychology, Buddhist psychology, and neuroscience. According to Gilbert, "One of its key concerns is to use compassionate mind training to help people develop and work with experiences of inner warmth, safeness and soothing, via compassion and self-compassion."
Metacognitive training (MCT) is an approach for treating the symptoms of psychosis in schizophrenia, especially delusions, which has been adapted for other disorders such as depression, obsessive–compulsive disorder and borderline over the years. It was developed by Steffen Moritz and Todd Woodward. The intervention is based on the theoretical principles of cognitive behavioral therapy, but focuses in particular on problematic thinking styles that are associated with the development and maintenance of positive symptoms, e.g. overconfidence in errors and jumping to conclusions. Metacognitive training exists as a group training (MCT) and as an individualized intervention (MCT+).
Preregistration is the practice of registering the hypotheses, methods, or analyses of a scientific study before it is conducted. Clinical trial registration is similar, although it may not require the registration of a study's analysis protocol. Finally, registered reports include the peer review and in principle acceptance of a study protocol prior to data collection.