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Single case experimental design (SCED) has a long, well‐respected tradition in evaluating the effectiveness of behavioural interventions for people with learning disabilities and challenging behaviours. However, shift the focus to other psychological modalities (such as psychodynamic psychotherapy) or differing presenting problems (such as interpersonal problems) and the use of SCED methodologies is severely curtailed. This paper describes the application of SCED methodologies in the evaluation of treatment of three clients: the psychodynamic psychotherapy of hypochondriasis in an A/B design, psychodynamic psychotherapy of ambulophobia in an A/B design, and cognitive‐behavioural therapy of anger and aggression in a shifting criterion design. Visual and statistical analysis of the time series data revealed that the hypochondriasis and the anger cases responded to treatment, whereas the ambulophobia case showed some deterioration during the intervention. The cases are discussed in terms of the strengths and weaknesses of the methodologies applied and the relative merits of accruing SCED evidence in the evaluation of the plethora of psychological modalities now being made available to learning disabled clients.

This paper covers different types of research designs, like, longitudinal, cross-section and sequential design, experimental design (including factorial experimental design), and correlational design, with illustrative examples. This paper will help a scholar to know how choice of research design depends on a number of parameters, highlighted by author.

The purpose of this paper is to investigate the body-mind problem from a mathematical invariance principle in relation to personality dynamics in the psychological and the biological levels of description.

The relationship between the two mentioned levels of description is provided by two mathematical models as follows: the response model and the bridge model. The response model (an integro-differential equation) is capable to reproduce the personality dynamics as a consequence of a determined stimulus. The invariance principle asserts that the response model can reproduce personality dynamics at the two levels of description. The bridge model (a second-order partial differential equation) can be deduced as a consequence of this principle: it provides the co-evolution of the general factor of personality (GFP) (mind), the it is an immediate early gene (c-fos) and D3 dopamine receptor gene (DRD3) gens and the glutamate neurotransmitter (body).

An application case is presented by setting up two experimental designs: a previous pilot AB pseudo-experimental design (AB) pseudo-experimental design with one subject and a subsequent ABC experimental design (ABC) experimental design with another subject. The stimulus used is the stimulant drug methylphenidate. The response and bridge models are validated with the outcomes of these experiments.

The mathematical approach here presented is based on a holistic personality model developed in the past few years: the unique trait personality theory, which claims for a single personality trait to understand the overall human personality: the GFP.

Single subject research has long been employed to evaluate intervention effectiveness with students with learning or behavioral disabilities. Typically, the results of single subject research are presented on graphic displays and analyzed by a method of visual inspection, in which analysts simultaneously consider such data elements as level change, slope change, and variability in baseline and treatment data. However, over the years several concerns regarding visual inspection have emerged, including relatively low inter-rater reliabilities. This chapter reviews the arguments in favor of visual inspection as an analytic tool, and also summarizes the arguments favoring statistical analysis of single case data. The use of randomization tests is recommended, and an example is provided of its use in research with students with learning and behavioral disorders.

The purpose of this single-case experimental design paper is to examine the efficacy of the high-dosage Life Minus Violence – Enhanced (LMV-E) programme with a small sample of four violent women in custody. All participants were undertaking LMV-E as one component of their treatment pathway in an Offender Personality Disorder (OPD) treatment service for women with personality disorder. The methodology employed an AB baseline design with a six-month baseline period, nine-month treatment period and six-month follow-up. Levels of direct and indirect aggression were recorded throughout the baseline, intervention, and follow-up period. In the follow-up period, women were engaging in further treatment. Psychometric measures linked to treatment domains were used to explore clinically significant and reliable change following the intervention. Clinical and reliable change was indicated in some treatment domains for each participant following the intervention. The pattern of these reductions varied between the women. The patterns of findings are discussed and recommendations presented.

The methodology employed an AB baseline design with a six-month baseline period, nine-month treatment period and six-month follow-up. Levels of direct and indirect aggression were recorded throughout the baseline, intervention and follow-up period. In the follow-up period, women were engaging in further treatment. Psychometric measures linked to treatment domains were used to explore clinically significant and reliable change following the intervention.

Clinical and reliable change was indicated in some treatment domains for each participant following the intervention. The pattern of these reductions varied between the female offenders. The patterns of findings are discussed and recommendations presented.

The LMV-E programme was associated with some positive improvements in treatment domains measured in a small sample of female violent offenders. Improvements to some degree were most commonly found in the domains of anger, emotional control and components of criminal thinking. It would be clinically useful to examine characteristics of individuals that appear to benefit most from particular interventions.

There are no existing published findings related to the implementation of LMV-E with females. Therefore, this paper provides preliminary contribution to the evidence base in this area.

Systematic reviews – that is, research reviews that are rigorous and follow scientific methods – are increasingly important for assisting stakeholders in implementing evidence-based decision making for children and adults with disabilities. Yet, systematic reviews vary greatly in quality and are therefore not a panacea. Distinguishing “good” reviews from “bad” reviews requires time and skills related to the appraisal of systematic reviews. The purpose of this chapter is to inform stakeholders (i.e., practitioners, administrators, policy makers) of evidence-based information sources that provide synopses (i.e., appraisals) of systematic reviews, to provide guidance in reading and interpreting the synopses of various sources, and to propose how to make sense of multiple synopses from different sources for the same systematic review. A secondary purpose of this chapter is to illustrate how stakeholders can conduct their own appraisals if synopses are not available.

This article seeks to help senior local policy‐makers, managers and practitioners in children's services to develop robust but realistic and manageable strategies for measuring outcomes in a multi‐disciplinary context. Drawing on orthodox research methods, it sets out strategies for measuring outcomes in children's services at individual child, service and community levels. It is intended to show how, in a given local jurisdiction, different approaches to measuring outcomes could fit together logically and within a reasonable budget, so creating an outcome culture and contributing to the development and integration of services. The principles outlined would also apply to adult services.

In the field of behavioral disabilities, systematic direct observation (SDO) has been an integral tool for describing and explaining relationships between student and teacher behavior in authentic classroom settings. However, this method of measurement can be resource-intensive and presents a series of complex decisions for investigators. The purpose of this chapter is to review a series of critical decisions investigators must make when developing SDO protocols to address their research questions. After describing each decision point and its relevance to the measurement system, we identify trends and special considerations in the field of behavioral disabilities with respect to each decision. We organize content according to deciding what to measure, deciding how to measure it, and critical steps to prevent system breakdowns. Finally, we identify avenues for research to further the impact of SDO in the field of behavioral disabilities.

Special educators make countless decisions regarding services for students with disabilities. The evidence-based practice movement in education encourages those decisions be informed by the best available evidence, professional judgment, and client values and context. In this chapter we argue that while evidence is the best basis for making decisions it is imperfect and uncertainty about the evidence-base for decisions will always exist. We outline three classes of evidence and the sources of uncertainty for each. Finally, we describe a framework for integrating these different sources of evidence as a means for increasing confidence in evidence-based decisions.