The use of configural frequency analysis for explorative data analysis

Configural frequency analysis (CFA) is a widely used method of explorative data analysis. It tries to detect patterns in the data that occur significantly more or significantly less often than expected by chance. Patterns which occur more often than expected by chance are called CFA types, while those which occur less often than expected by chance are called CFA antitypes. The patterns detected are used to generate knowledge about the mechanisms underlying the data. We investigate the ability of CFA to detect adequate types and antitypes in a number of simulation studies. The basic idea of these studies is to predefine sets of types and antitypes and a mechanism which uses them to create a simulated data set. This simulated data set is then analysed with CFA and the detected types and antitypes are compared to the predefined ones. The predefined types and antitypes together with the method to generate the data are called a data generation model. The results of the simulation studies show that CFA can be used in quite different research contexts to detect structural dependencies in observed data. In addition, we can learn from these simulation studies how much data is necessary to enable CFA to reconstruct the predefined types and antitypes with sufficient accuracy. For one of the data generation models investigated, implicitly underlying knowledge space theory, it was shown that zero‐order CFA can be used to reconstruct the predefined types (which can be interpreted in this context as knowledge states) with sufficient accuracy. Theoretical considerations show that first‐order CFA cannot be used for this data generation model. Thus, it is wrong to consider first‐order CFA, as is done in many publications, as the standard or even only method of CFA.     

Bicriteria cost versus service analysis of a distribution network—a case study

In order to improve the distribution system for the Nordic countries the BASF AG considered 13 alternative scenarios to the existing system. These involved the construction of warehouses at various locations. For every scenario the transportation, storage, and handling cost incurred was to be as low as possible, where restrictions on the delivery time were given. The scenarios were evaluated according to (minimal) total cost and weighted average delivery time. The results led to a restriction to only three cases involving only one new warehouse each. For these, a more accurate model for the cost was developed and evaluated, yielding results similar to a simple linear model. Since there were no clear preferences between cost and delivery time, the final decision was chosen to represent a compromise between the two criteria. Copyright © 1999 John Wiley & Sons, Ltd.     

Unity versus multiplicity: a conceptual analysis of the term "self" and its use in personality theories

There is no single answer to the unity-multiplicity problem regarding the self for the simple reason that the term "self" is used by too many different theorists in too many different ways. In fact, there are several important substantive topic areas that need to be distinguished and studied scientifically. The topic areas I examine in this article are reflexivity, unit coherence, agency, and subjectivity. Each of these areas will be evaluated in terms of what it contributes to, and can be interpreted in terms of, the unity-multiplicity issue. It is proposed that we need a more differentiated technical vocabulary if we are to better understand the phenomena we are examining. Matching our technical vocabulary to this empirical detail sharpens the questions being asked and places the empirical facts in better focus. A more elaborate framework of conceptual differentiation provides a better basis for developing an integrated theory.     

An application of a discriminant analysis, based on the weighted H-index—a reanalysis

Abstract.— A discriminant-analysis method for dichotomized data, based on the weighted H -index as the similarity measure between two persons, is introduced. The weight assigned each item is a strictly increasing function of the absolute value of its D -estimate. Here, only power functions are used. The method which is called the WHIDD-analysis, is applied to some clinical data (Jonsson, 1975). The power of 3 produces a correct classification of all 32 persons in the validation group.     

Co-occurrence of personality disorders with mood, anxiety, and substance use disorders in a young adult population

The purpose of this study was to determine the co-occurrence of DSM- III-R personality disorders (PDs) with mood, anxiety, and substance use disorders in a young adult population. The members of the Northern Finland 1966 Birth Cohort Project, living in the city of Oulu with an age of 31 years (N = 1,609) were invited to participate in a two-phase field study. The SCID I and II were used as diagnostic instruments. One hundred and seventy-seven out of 321 interviewed subjects met the criteria for mood, anxiety, or substance use disorders. Altogether 72 (41%) of the subjects with an Axis I disorder met the criteria for at least one PD. The weighted co-occurrence rate of any PD varied from 28% for mood disorders to 47% for anxiety disorders. PDs, especially those in Cluster C, are highly associated with Axis I psychiatric disorders in population.     

State of the aRt personality research: A tutorial on network analysis of personality data in R

Network analysis represents a novel theoretical approach to personality. Network approaches motivate alternative ways of analyzing data, and suggest new ways of modeling and simulating personality processes. In the present paper, we provide an overview of network analysis strategies as they apply to personality data. We discuss different ways to construct networks from typical personality data, show how to compute and interpret important measures of centrality and clustering, and illustrate how one can simulate on networks to mimic personality processes. All analyses are illustrated using a data set on the commonly used HEXACO questionnaire using elementary R-code that readers may easily adapt to apply to their own data.     

Normative data on a battery of neuropsychological tests in the Han Chinese population

In order to develop normative data of a battery of neuropsychological tests in the mainland Chinese population, we examined the performance of 15 neuropsychological tests in 465 healthy subjects (231 males and 234 females) in a population‐based cohort study. The years of education were ranged between 1 and 23 years, and ages were ranged between 16 and 75 years old. The 15 neuropsychological tests cover five domains of neurocognitive functions including attention and speed of information processing, memory and learning, verbal function, visual constructive abilities, and executive function. We also assessed the effects of gender, age, educational attainment on the performance of these neuropsychological tests. The results showed that, as expected, educational attainment and age are the two main factors affecting performance in these tests. Educational attainment has the strongest predictive effect on all tests, while the majority of tests selected in this study are also affected by age at examination to varying degrees. The presented normative data will be useful for future studies in related clinical research, and be of value in transcultural neuropsychological studies.     

The influence of personality on HE students’ confidence in their academic abilities

Students’ confidence in their academic abilities, measured with the Individual Learning Profile (ILP) scale, was examined in relation to their personality traits and grades. To validate the ILP, in Study 1, factor analysis of data from 3003 students extracted six factors (Reading and Writing, Hard IT, Numeracy, Time Management, Speaking, and Easy IT) with good internal reliability. Subsequently, in Study 2, 130 students completed the refined ILP, and scales measuring the Big Five, Perfectionism, Anxiety, and Self-Esteem. Between 10% and 31% of the variance in four ILP factors, but not IT skills, could be predicted by personality traits, but Self-Esteem and Anxiety were not influential. Higher conscientiousness and openness positively predicted higher confidence in reading and writing, while agreeableness and three aspects of perfectionism predicted confidence in numeracy skills. Being introverted and female were predictive of lower confidence in speaking, as were low conscientiousness and the perfectionistic desire to be organised. Conscientiousness, Extraversion, and the perfectionistic desire to be organised were strong predictors of confidence in time-management skills, which in turn predicted first-year GPA. The reliability of the ILP was examined over the course of a one-year interval.     

The effects of daily newspapers on their readers—Exemplary presentation of a study and its results

Investigated in a long term study the effects of daily newspapers. A field experiment was carried out in which newspapers with different political standpoints were allocated to the 760 subjects (male students). The effect criteria measured were both specific and general political attitudes, images of politicians, and judgmental tendencies. The analysis of media effect extended to both differential and general effects. Clear attitude changes consistent with the opinions presented in the newspapers could be established in attitude spheres where the arguments presented were of a more controversial nature. Analogous effects could only partially be observed as regards the image of well known politicians. If features of the subjects' judgmental process are taken as effect criteria (use of dimensions), no newspaper related effects can be observed. In spite of considerable devaluation of one newspaper by the subjects, there were no boomerang effects. This ties in with the fact that practically no differential attitude changes (e.g. relating to dogmatism or political interest) could be established. Taking into account the historical background to our study, we conclude that the effect of the daily newspapers examined here was more or less confined to attitudes towards more salient issues. Finally, we have outlined general hypotheses which can be the starting point for the analysis of long term cumulative media effects.     

‘Learning from research’: Therapist perspectives on the benefits and challenges of participating in a longitudinal,systematic case‐study

Objectives: In psychotherapy research we have often neglected to examine the impact of research procedures on therapy process and outcome. Such information is extremely important in helping us evaluate the validity of our findings, increase relevance of research for practice, and choose appropriate methods for future projects. The aim of this paper is to share the experience of six person‐centered therapists, who participated in a longitudinal, systematic study, and present their reflections about the impact of research on therapy process, therapeutic engagement and professional development. Methods: The findings have emerged from semi‐structured interviews that took place after the first, sixth (middle) and last therapy session. In total 18 interviews were conducted. These data were part of a much larger research protocol that included a number of outcome and process measures. Results & Conclusions: The analysis of therapist narratives revealed important benefits for those participating in systematic case study research. The use of Brief Structured Recall methods and qualitative interviewing was an important factor in promoting therapist reflexivity and professional development. The importance of a strong research alliance and the active involvement of the client in the research process is discussed.     

Teens on the Internet—commercial application of a deconstructive analysis of ‘teen zine’ features

This paper presents the authors' approach to understanding drivers of interest for teen e‐zines (Internet magazines). The paper shows how a deconstruction of the current set of e‐zines provides the raw material for a conjoint measurement study, whereby the elements are mixed and matched in order to create new test concepts. From reactions to those test concepts one can identify four newly emerging segments: the ‘indifferents’, the ‘adults in training’, the ‘media and me’ and the ‘talk and celebrate being a teen’. Deconstruction applied to the competitive frame provides both a deeper understanding of the e‐zine landscape and input for newer and better e‐zines that are targeted to specific mindsets. Copyright © 2003 Henry Stewart Publications.     

The impact of mothers' trait anxiety on their expectations of approach‐avoidance behaviour in anxious and non‐anxious children

This study investigated estimates of approach and avoidance behaviour in clinically anxious and non‐anxious children, and whether mothers' expectations of their children's avoidance differed as a function of high trait anxiety (HTA) versus low trait anxiety (LTA). Participants were 62 clinically anxious and 60 non‐anxious children aged 7–12 years and their mothers. Estimates of avoidance were obtained using an analogue task in which children and mothers were given threat and pleasant information about two novel animals and were asked to estimate children's avoidance of the threat animal's habitat when the threat animal was present (threat condition) and absent (safe condition) from the habitat and when its presence was uncertain (ambiguous condition). Contrary to expectation, anxious children did not differ from controls in estimates of avoidance in any condition. However, relative to HTA mothers of anxious children and LTA mothers of non‐anxious children, HTA mothers estimated greater approach behaviour by their non‐anxious children in the threat condition. Findings suggest that mothers' expectations of children's approach‐avoidance behaviour is influenced by both maternal and child factors.     

Responses to interoceptive exposure in people with posttraumatic stress disorder (PTSD): a preliminary analysis of induced anxiety reactions and trauma memories and their relationship to anxiety sensitivity and PTSD symptom severity

A growing body of evidence suggests that anxiety sensitivity (AS; fear of arousal-related sensations) plays a role in posttraumatic stress disorder (PTSD). Consistent with this, evidence indicates that interoceptive exposure (IE), which is a method for reducing AS, reduces PTSD symptoms. Clinical observations from our treatment studies indicate that IE triggers both anxiety and trauma memories in people with PTSD. The primary aim of this study was to describe the anxiety responses to a series of IE exercises and to examine whether or not trauma memories were activated. A secondary aim was to explore the relationships among AS, PTSD symptom severity, and IE responses. Data were collected from 23 people with PTSD who completed measures of PTSD symptoms and AS and a standardized battery of 10 IE exercises. Elevated anxiety and strong arousal responses were frequently elicited by the exercises, and trauma memories were also frequently triggered. AS and IE-triggered trauma memories significantly predicted IE-induced peak anxiety. The implications of the findings are discussed in terms of how IE might exert its therapeutic effects in the treatment of PTSD.     

The use of numerical and graphical statistical methods in the analysis of data on learning to see complex random-dot stereograms

Several numerical and graphical statistical methods are illustrated in an analysis of data from an experiment that investigated a hypothesis of Julesz that giving a person a priori information about the structure of a complex random-dot stereogram reduces the time needed to perceive it when it is viewed. The data are divided into two groups, one consisting of those observers who received no cue or verbal cues (NV) and the other consisting of those who received verbal-visual cues (VV). A quantile-quantile plot shows that the NV times (mean = 7.6) are longer than the VV times (mean =5.6). By using probability plots, it is shown that the perception times have an exponential probability distribution. A hypothesis test based upon this distribution is used to show that the difference between the NV and VV times has significance slightly below 0.05.     

Effects of cognitive-behavioural therapy on anxiety,depression and condom use in people with HIV in Mexico City: a pilot study

Anxiety and depression in people living with HIV (PLWH) are negatively associated with healthy sexual behaviours. We pilot-tested a Cognitive-Behavioural Therapy (CBT)-based intervention to reduce anxiety and depression, aimed to increase serostatus disclosure to sexual partners, quality of sexual life (QoSL) and condom use. The study had a single-case experimental design (AB) with follow-up measures. Eleven PLWH with moderate/severe anxiety/depression received six-module CBT intervention delivered in ten one-hour individual weekly sessions. Anxiety, depression, consistent/correct condom use and QoSL were measured. Depression and anxiety decreased after the intervention (depression baseline [BL] Mdn = 21, final [F] Mdn = 3, z = -2.934, p = .003; anxiety BL Mdn = 30, F Mdn = 4, z = -2.941, p = .003). QoSL improved (BL Mdn = 28, F Mdn = 13, z = -2.625, p = .009), along with participants’ ability to use condoms (57.14 vs.100, z = -2.937, p = .003). Effect size was large, changes were maintained at follow-up measurements. The CBT intervention had positive effects in reducing anxiety and depression, which could facilitate the acquisition of healthy sexual behaviours. Further studies are important to clarify the benefits of targeting emotional variables to improve wellbeing and prevention behaviours in PLWH.