A comparison of methods to test mediation and other intervening variable effects

A Monte Carlo study compared 14 methods to test the statistical significance of the intervening variable effect. An intervening variable (mediator) transmits the effect of an independent variable to a dependent variable. The commonly used R. M. Baron and D. A. Kenny (1986) approach has low statistical power. Two methods based on the distribution of the product and 2 difference-in-coefficients methods have the most accurate Type I error rates and greatest statistical power except in 1 important case in which Type I error rates are too high. The best balance of Type I error and statistical power across all cases is the test of the joint significance of the two effects comprising the intervening variable effect.     

Flank transparency: transparent filters seen in dynamic two-color displays

Flank transparency is the perception of a colored transparent filter evoked by apparent-motion displays containing as few as two colors. Displays of flank transparency contain a random array of line segments placed on a uniform background. Small flanks are added to the line segments if the segments fall in the interior of a moving virtual shape, such as a virtual disk. This leads to the perception of a colored transparent disk with well-defined boundaries moving over the array of lines. Current qualitative and quantitative models of luminance and color conditions for perceptual transparency do not account for flank transparency as they require displays containing at least three different colors.     

Perceptions of an old female eyewitness: is the older eyewitness believable?

Young adults rated an old female witness (82 years) to be less competent but more honest than a young female witness (28 years). The effect of age stereotyping on believability was assessed indirectly by using a variant of Loftus' misinformation paradigm. Regression analysis showed that the more competent a witness was perceived as being, the more influential was the misinformation she provided. This was true, however, only when the witness was young because the relatively lower competence of the old witness was associated with nonsignificant misinformation effects. These data suggest that negative beliefs associating incompetence with old age may compromise the believability of older eyewitnesses.     

Effects of reducing frequency of intrinsic knowledge of results on the learning of a motor skill

The guidance hypothesis suggests too much knowledge of results during skill acquisition can be detrimental to long-term performance. Possibly, the learner becomes dependent on augmented KR and is unable to use intrinsic feedback. This study examined this hypothesis with three groups performing a golf putting task. One group received continuous KR about ball path and final location; the other groups were deprived of specific KR on 50% or 100% of the acquisition trials. As expected, the continuous KR group performed better during acquisition, but the KR-deprived groups performed better on delayed retention trials, especially when KR was absent.     

Counseling and Values Publication Patterns From 1990 to 2009

The authors reviewed publication patterns for articles published from 1990 to 2009 in the journal Counseling and Values. Article content and author demographic characteristics (i.e., sex of authors, nation of domicile, employment setting of authors, frequently contributing individuals and universities) were analyzed by 5‐year periods for trends over time. Specific attention was given to periodic changes in characteristics of research articles, including types of research designs, quantitative/qualitative approach, participant types, random assignment, sample size, intervention/nonintervention focus, and statistical procedures used.     

Women–Focused Treatment Agencies and Process Improvement: Strategies to Increase Client Engagement

Behavioral health treatment agencies often struggle to keep clients engaged in treatment. Women clients often have additional factors such as family responsibilities, financial difficulties, or abuse histories that provide extra challenges to remaining in care. As part of a national initiative, four women-focused drug treatment agencies used process improvement to address treatment engagement. Interviews and focus groups with staff assessed the nature and extent of interventions. Women-focused drug treatment agencies selected relational-based interventions to engage clients in treatment and improved four-week treatment retention from 66% to 76%. Process improvement interventions in women-focused treatment may be useful to improve engagement.     

At Death's Door: Therapists and Patients as Agents

This paper explores the interrelationship between patients' exercise of will to make advances in an analysis and their readiness to forgive their analysts for their human limitations. There is a thin line between idealization of the analyst, probably a necessary component of the process, and resentment of the analyst for his or her privileged position in the world and in the analytic situation itself. The patient's “progress” emerges as a kind of reparative gift, one that implicitly overcomes the patient's tendency to withhold such change out a sense of chronic, malignant envy. Particularly poignant in terms of its potential to elicit the patient's reparative concern is the situation in which the analyst is struggling with his or her mortality because of aging or life-threatening illness. In this essay two clinical vignettes are presented to illustrate some of the issues that this situation poses. One begins with an elderly patient appearing at the door of the analyst's (the author's) home the day of his return from the hospital after coronary bypass surgery. The other begins with an analyst who is terminally ill appearing at the door of a patient who is threatening suicide. The two stories are compared in terms of their implications for human agency, the exercise of will, and the coconstruction of meaning in the face of mortality in the analytic process.     

Therapeutic Passion in the Countertransference

The place of the analyst's “influence” in psychoanalytic theory and practice is explored. There is a current in the literature in which it is welcomed as an aspect of “corrective experience,” although usually legitimized by being forced into the narrow channel of interpretation and understanding. A taboo on influence persists despite theoretical shifts that would seem to clear the way for greater acceptance of its importance. Among other factors, the aversion to influence is traced to its association with hypnotic “suggestion,” which implies little room for the patient's autonomy. Opening the door to embracing the possibility of influence goes hand in hand with, on one hand, the analyst respecting the patient as a competent free agent and, on the other hand, the analyst combining willingness to take a stand with willingness to reflect critically on his or her participation. In that context, and with those caveats, the analyst takes on the responsibility to combat destructive introjects and to become an inspiring, affirmative presence in the patient's life. The analyst's passion for the patient's well-being and for changes that entail the realization of dormant potentials now has its place. Different kinds of expression of therapeutic passion in the countertransference are described and illustrated.     

Response to Layton: Considering the Sociopolitical Context of Dialectical Constructivism

What is commonly missing from psychoanalytic formulations, including my own, that Lynne Layton rightfully challenges us to correct is the locating of the possible dysfunctionality of the individual and the family within the context, not just of a brutally indifferent universe but also of an arguably brutally indifferent economic, political, and institutional environment. I differ with Layton in that I am more prepared to consider possible universals that bear on human experience and moral standards. For example, I would say that “reflection on the foundations of knowledge” trumps nonreflective fundamentalist thinking in capturing the best attitude to assume towards pursuit of truth. Also, the universality of the human tendency to deny death may underlie many diverse cultural belief systems. Nevertheless, Layton challenges us to reflect on how conventional psychoanalytic practices may collude with aspects of our own culture we would do well to try to combat, in ourselves and in our patients, through owning and proactively exercising our moral influence.     

Acquisition of Effector-Specific and Effector-Independent Components of Sequencing Skill

In a serial reaction time task, participants practiced a repeating sequence with 1 hand. In interleaved blocks, they responded to random sequences with the other hand. Experiment 1 was composed of 5 sessions, each consisting of 30 blocks. Intermanual transfer, reflecting a hand-independent component of sequence knowledge, increased across session. A smaller but significant, nontransferable, and hand-specific component was evident in each session and did not increase with practice. Experiment 2 comprised only 1 session. Uninterrupted practice (no interleaved random blocks) improved hand-independent sequence learning in comparison with interrupted practice (as implemented in Experiment 1), whereas hand-specific sequence learning was unaffected by this between-subjects manipulation. These findings suggest separate mechanisms for effector-independent sequence learning and effector-specific acquisition of optimized response coarticulation.