More on the reliability of the kinesthetic aftereffects measure and need for stimulation.

Recently, some have argued for a renewed interest in the kinesthetic aftereffects procedure (KAE) as a personality measure even though it may show low test-retest reliability. These arguments indicate that first-session KAE is valid but later-session KAE is not, due to the supposed appearance (in later sessions) of unwanted functional similarity between different aspects of the KAE procedure. Functional similarity leads to reduced reliability and validity of the retest. Data from two new studies do not support this functional similarity hypothesis, but these data do support the KAE by showing test-retest reliability. Also, the data show some new but tentative experimental evidence for the construct validity of second-session KAE as a measure of need for stimulation. These data do support the KAE as a personality measure but, when contrasted to arguments that only first-session KAE is valid, the data indicate that this is unresolved.     

Kinesthetic Aftereffect and Augmenting/Reducing: A Two-Session Procedure,and Hence Identification of Stimulus-Governed Subjects,is Contraindicated

A few of the recent researchers of kinesthetic aftereffect (KAE) as an index of augmenting/reducing have continued to employ a two-session procedure. Findings that have accrued in the past decade indicate (a) The first administration of KAE is a reliable (internally consistent) and valid index of augmenting-reducing; (b) there are carry-over effects from the first to the second administration that bias the second session's preinduction scores; (c) KAE scores from sessions after the first do not relate to first-session scores (low retest reliability) and do not measure augmenting/reducing; and (d) unless special procedures are undertaken to avoid using the biased second- (or later-) session preinduction scores, a KAE procedure involving more than one session is contraindicated. When we reached a similar conclusion earlier (Baker et al., 1974), Petrie (1974) disagreed, arguing that a two-session procedure was needed to identify and eliminate an atypical subgroup, the “stimulus governed.” The case for determining which subjects are stimulus-governed is assessed and found wanting. Except in special circumstances, a one-session KAE procedure, in which all preinduction trials precede the first exposure to aftereffect induction, is indicated.     

When “reliability” fails,must a measure be discarded?—The case of Kinesthetic Aftereffect

Critics of Kinesthetic Aftereffect (KAE) recommend abandoning it as a personality measure largely because of poor test-retest reliability. Although no test can be valid if lacking true reliability, to discard a measure because of poor retest reliability is an oversimplification of validation procedures. This pitfall is exemplified here by a reexamination of KAE. KAE scores involve measures before (pretest) and after (test) aftereffect induction. Internal analysis of a KAE study showed: Differential bias is present; its locus is the second session pretest; its form makes second-session pretest scores functionally more similar to first- and second-session test scores and functionally more dissimilar to first-session pretest scores. Given this second session bias, the retest correlation tells us nothing about the true reliability of a one-session KAE score. However, if a measure possesses external validity, it must to some degree show true reliability. Based upon a literature review of one-session KAE validity studies, we conclude that one-session KAE scores are valid and hence show true reliability. KAE remains a promising personality measure.     

Interdigital transfer of kinesthetic after-effects

Two experiments investigated the effect of using a different finger for inspection (I) than is used in making judgments on the size of a kinesthetic aftereffect (KAE). Experiment I investigated transfer of I stimulation of the ring finger to judgments made with the index finger, A control group used the index finger for both judgments and I period. Results indicated significant KAE for both groups. Experiment II replicated Experiment I except the second finger was used to test for transfer of I stimulation to judgments made with the index finger. Results indicated KAE for only the control group which used the index finger for both judgments and I stimulation.     

Menstrual cycle affects kinesthetic aftereffect, an index of personality and perceptual style

Research suggests that kinesthetic aftereffect (KAE) scores reflect status on a postulated stimulus intensity modulation (SIM) mechanism that damps down subjective stimulus intensity for some (reducing) and increases it for others (augmenting). Such a mechanism would help account for empirically observed individual differences in such behaviors as pain tolerance, sensory deprivation reactivity, and stimulation seeking. It was hypothesized and confirmed in three adult female samples that KAE varies curvilinearly over the menstrual cycle: Greater KAE reduction occurs at the cycle's beginning and end. Neither tiredness, oral contraception, medication, attention, nor social expectations can explain this finding. Of the behaviors studied in the KAE literature, only five are also encompassed by the menstrual cycle literature. Four of these (antisocial behavior, acute schizophrenic episodes, accidents, and activity level) show similar curvilinearity over the cycle. We hypothesize that cyclical variation in the SIM mechanism mediates the curvilinear pattern observed for both these four behaviors and KAE.     

Interdigital transfer of kinesthetic after-effects

Two experiments investigated the effect of using a different finger for inspection (I) than is used in making judgments on the size of a kinesthetic aftereffect (KAE). Experiment I investigated transfer of I stimulation of the ring finger to judgments made with the index finger, A control group used the index finger for both judgments and 1 period. Results indicated significant KAE for both groups. Experiment II replicated Experiment I except the second finger was used to test for transfer of I stimulation to judgments made with the index finger. Results indicated KAE for only the control group which used the index finger for both judgments and 1 stimulation.     

Reinforcement contrast effects on the rewarding and aversive components of intracranial stimulation

Rats performing a free-operant locomotor response in a shuttlebox to initiate and then escape medial diencephalic stimulation were tested daily on a randomized sequence of three stimulation intensities. In spite of a 1-hr interval between stimulation intensity changes, substantial and graded reinforcement contrast effects were obtained. “Elation” effects were obtained both on the rewarding (latency to initiate) and the aversive (latency to escape) components of stimulation whereas “depression” effects were found only on the measure of reward.     

INCREASING SPONTANEOUS LANGUAGE IN THREE AUTISTIC CHILDREN

A time delay procedure was used to increase spontaneous verbalizations of 3 autistic children. Multiple baseline across behaviors designs were used with target responses, selected via a social validation procedure, of two spontaneous responses (“please” and “thank you”) and one verbally prompted response (“you're welcome”). The results indicate gains across target behaviors for all children, with occurrence across other stimuli and settings. These gains were validated socially with 10 adults. Furthermore, increases in appropriate language had no effect on levels of inappropriate speech.     

Varying Levels and Types of Engagement in an Online Relationship Enhancement Program for Couples Following Breast Cancer

Engagement in online interventions, defined as the extent to which participants are involved in and attentive to the contents of the intervention, has been shown to predict treatment outcome. However, participant engagement and program completion are often quite low. Aiming to provide insights that could help improve engagement, this study explores engagement in an online intervention for young couples with breast cancer, Couplelinks, by describing the development of a method to assess engagement, presenting a framework for understanding varying engagement levels, and discussing strategies used by Couplelinks facilitators to work with participants of differing engagement levels. The measure of engagement developed for this study was a composite consisting of indices of average completion time, accountability, and attitude. Utilizing this composite measure, the following distinct “couple types,” with varying levels of engagement, were discerned: (a) “keen” couples, (b) “compliant” couples, (c) “apologetic” couples, and (d) “straggling” couples. Facilitators’ approaches to working with each type of couple and suggestions for potential therapeutic applications are discussed. The finding that couples vary in terms of engagement level, and not solely based on facilitator skill and/or involvement, supports the need to better understand the concept of engagement in order to make online interventions more effective.     

Evidence for all-or-none preperceptual processing in perceptual set

“Set” is known to improve the accuracy of report of the stimulus attributes for which Ss are set to respond. The set may produce this effect by acting on either preperceptual or postperceptual processes, or both. To elucidate the manner by which set produces its effect, this paper explores the consequences of two assumptions concerning set (1) On any given trial, a S is either “set” or “not set”: (2) if “set” by the stimulus information. S’s perception of the stimulus actually improves, whereas, if “not set” by the stimulus reformation, the S’s report correctness is improved by an independent interaction of stimulus and set information on a response process. Evidence is provided for both these assumptions. In addition. It is argued that only set given before stimulation can affect a perceptual process.     

Alexithymia and levels of processing: Evidence for an overall deficit in remembering emotion words

Alexithymia is a multifaceted personality construct that is thought to reflect a deficit in the cognitive processing of emotions. The effects of low vs. high Alexithymia, neutral vs. positive vs. negative words processed, and perceptual vs. semantic processing on memory were investigated in a group of 82 students using the levels of processing paradigm and the Remember/Know procedure. No differences were observed between low and high Alexithymia students when neutral material was considered. However, for both levels of processing, high Alexithymia students recalled fewer emotion words (both positive and negative) when “Remember” responses were considered. “Know” responses were comparable across Alexithymia groups. The deficit in the ability to consciously access emotional material (the “Remember” responses) may help explain the impaired regulation of intense emotional states by high Alexithymia individuals.     

From Traumatic Language to Posttraumatic Language: The Development of Language in Therapy According to the “Phenomenon of Hope” Model

Hope and language are part of the human development process starting from birth and continuing through all the stages of development. They are tools that help us to cope in complex situations. Environmental failure produces trauma, which damages the “self” and impairs the development of hope and language. The individual experiences “pessimistic hope” and “drained hope” and begins using “concrete language” and “pseudo-language.” Such profiles and languages indicate functional difficulties, including the inability to establish mature intimate personal relationships. When traumatic events such as those experienced in military combat compound childhood trauma (environmental failure), mental and functional difficulties buried by our defense systems may rise to the surface and worsen and chronic complex trauma may ensue. Psychotherapy for chronic complex trauma is complex. The therapeutic approach that is used in the “hope phenomenon” model includes five therapy stages that allow us to examine the effect of a trauma on personality and function. Here we examine the link between the five stages of therapy and the use of language. According to my experience, patients use concrete language and pseudo-language in the beginning of the therapeutic connection. As this connection and therapist-patient alliance evolves and deepens and the client and therapist move through the various stages, the patient then starts to use “plural language.” Concrete language and pseudo-language are used in the pessimistic hope and drawn hope stages, respectively, until a profile characterized by a realistic and mature hope emerges. This profile goes hand in hand with an ability to use plural language. This article examines the development of hope and language in a complex posttraumatic stress disorder (PTSD) patient who was treated using the hope phenomenon model. Consent for the therapy details to be used in this article was given by the patient.     

Posttraumatic growth following pregnancy termination for fetal abnormality: the predictive role of coping strategies and perinatal grief

Background: Research about termination for fetal abnormality (TFA) suggests that it is a traumatic event with potential negative psychological consequences. However, evidence also indicates that following traumatic events individuals may experience growth. Although TFA’s negative psychological outcomes are well documented, little is known of the potential for growth following this event. Therefore, the study’s objectives were to measure posttraumatic growth (PTG) post-TFA, examine the relationship between PTG, perinatal grief and coping, and determine the predictors of PTG.

Design: An online, retrospective survey was conducted with 161 women.

Methods: Eligible participants were women over 18 who had undergone TFA. Participants were recruited from a support organisation. They completed the Brief COPE, Short Perinatal Grief Scale and Posttraumatic Growth Inventory. Data were analysed using regression analyses.

Results: Moderate levels of PTG were observed for “relating to others,” “personal strengths” and “appreciation of life.” “Positive reframing” was a significant predictor of PTG. Despite using mainly “adaptive” coping strategies, women’s grief levels were high.

Conclusions: “Adaptive” coping strategies such as, “positive reframing” are relevant to TFA. They may act as protective factors against distress and as foundations for growth, implicating that interventions such as Cognitive Behavioural Therapy, which aim to reframe women’s experience, may be beneficial.     

Binocular brightness combinations: Additive and nonadditive aspects

A conjoint measurement procedure is used for the measurement of binocular brightness as a function of left and right luminance inputs. For nonzero stimulation, the data confirm earlier findings: the system can be described as additive with a scale exponent of 1. If zero stimulation is included, however, no additive solution can be found (due to Fechner’s paradox). This fact, combined with various critical remarks in the literature with respect to the existence of a real luminance-averaging system, has led us to propose a model which takes account of Fechner’s paradox, and incorporates “realistic” exponents without requiring a multistage processing mechanism where different levels are characterized by different sensory scales. The proposed model makes the weighting coefficients for the two eyes dependent in a continuous way on the strength of stimulation in the two eyes, especially on the amount of contrast of the monocular stimuli. For zero background stimulation, contrast can be expressed in terms of luminance of the stimulus. In this way, the model is reduced to a simple testable form. While it much simpler than Engel’s (1969) model, the experimental results indicate that it might also work for the more general case.     

Defensive reactions of “wild-type” and “Domesticated” wild rats to approach and contact by a threat stimulus

Selective breeding of wild rats over many generations on the basis of low or high defensive threat and attack to human approach and contact has produced highly polarized “domesticated” and “wild-type” animals. Because the selection procedure selectively involves these two defense patterns, and these clearly differ in the two groups, it is of interest to determine if other, nonselected, defensive behaviors to threat stimuli also change. “Domesticated” and “wild-type” rats of the thirty-fifth generation were run in a fear defense test battery (F/DTB) to systematically evaluate defensive behaviors to a variety of present threat stimuli. “Domesticated” rats showed reduced avoidance and slower flight speed to an approaching experimenter, reduced jump/startle response to handelap and dorsal contact, less vocalization and boxing to vibrissae stimulation or to an anesthetized conspecific, and reduced defensiveness to an attempted pickup by the experimenter. These results indicate that selective bi-directional breeding for defensive threat and attack to human approach and contact produces group differences in a variety of defensive behaviors, and in defensiveness to stimuli other than those on which the selection was based. © 1994 Wiley-Liss, Inc.     

Financial Commitment Within Federations of Small Groups: The Effect of Cell‐Based Congregational Structure on Individual Giving

According to available research, congregations with strict rules and dense social networks are better able to screen out free‐riders (“selection”) and encourage greater levels of commitment among members (“production”). Both selection and production raise levels of individual giving. Research testing these processes generally utilizes a measure of network density. This study examines whether organizations that are a “federation of small groups” are better able to monitor members and hold them accountable, thus assuring acceptable levels of commitment on the part of members. Results of multilevel modeling using data from the 2001 U.S. Congregational Life Survey indicate that cell‐based congregations elicit higher levels of financial giving among congregants, net of all other effects, including network density. Moreover, cross‐level interactions between the cell‐based congregation variable and theological exclusivity as well as attendance are significant and positive. Cell‐based congregations provide a context in which individual‐level predictors of giving become more robust.     

The measurement of simulated stealing behaviour and moral judgement — a technique

A technique is described which attempts to measure the responses of children in hypothetical stealing dilemmas. A technique embodying two forms, a so-called “did do” version and a “should do” version, was constructed. The “did do” version was an attempt to represent the child in an “actual” though hypothetical stealing dilemma and through the use of the first person pronoun “I”, contrast this with a situation in which the child could respond in terms of how he or she thought he or she should. A series of highly significant differences within the groups on the “did do” and “should do” versions was noted, together with significant differences between the “delinquent” and “normal” populations. It was argued that such differences indicated that the procedure had good validity as well as acceptable reliability.     

The Implicit Relational Assessment Procedure as a Measure of Implicit Depression and the Role of Psychological Flexibility

A broad implicit measure of depressive emotional reactions was created by mapping the content of the depression scale from the Depression Anxiety and Stress Scale (DASS) on to the Implicit Relational Assessment Procedure (IRAP). Participants were asked to relate pairings of antecedents and emotional reactions that followed the formula “When X happens . . . I feel Y.” Groups of participants representing the low and high extremes of normative levels of depressive symptoms completed an IRAP before and after a sad mood–induction procedure. At baseline both groups produced a positive emotional response bias on the IRAP. After the sad mood induction, the “normal” group showed no change, whereas the “mild/moderate” depression group showed a significant decrease in the positivity of their emotional responses. A similar pattern of differential change was found when groups were created using scores on the AAQ-II. The findings are related to the broader literature on cognitive reactivity and implications for future research are considered.     

AN OPERANT TRACKING PROCEDURE IN THE AUDITORY ASSESSMENT OF PROFOUNDLY RETARDED INDIVIDUALS

The present study investigated a discrete-trials, operant tracking and a descending-series procedure for the determination of hearing levels with profoundly retarded individuals. These individuals were previously diagnosed as untestable. Following stimulus-control training with errorless discrimination procedures, hearing levels for each individual were examined with both procedures. For P-1 and P-2, the operant tracking procedure was administered following a descending-series procedure. Both were observed to “track” their own hearing levels. For P-3, the operant tracking procedure was administered first, followed by the descending-series procedure. Although P-3 also “tracked” her own hearing level, more variable responding was observed. Nonetheless, the operant tracking procedure proved quite workable and may provide for improved hearing testing with “difficult-to-test” individuals.     

The role of test procedure in linguistic integration studies

The effects of type of recognition test procedure were studied in a Bransford and Franks (1971) integration paradigm. Subjects received a two-alternative forced-choice recognition test or a modified “forced-choice” test in which all the sentences for each idea set were presented at once and the “old” sentences had to be identified. Contrary to the usual Bransford and Franks results, in which a yes-no, one-sentence-at-a-time recognition procedure is employed, the ability to discriminate “old” sentences from “new” sentences was clearly observed. A bias for selecting more complex sentences, however, was found for the modified “forced-choice” procedure. A prototype learning model is described to account for these results and previous data.