Hypnotic time distortion and free-recall learning — an attempted replication

Summary Krauss, Katzell and Krauss (1974) have presented evidence suggesting that hypnosis can be used to facilitate free-recall learning. Specifically, they report that hypnotised individuals, given special time-distortion instructions, can recall as much in three minutes as waking control subjects can in ten minutes. The present study was an attempt to replicate and extend this main finding of Krauss et al. The results of the present study failed to replicate Krauss et al.'s finding; in fact, the hypnotised subjects did rather worse than waking control groups; also no relationship was found between recall scores and depths of hypnosis. Marked discrepancies were noticed between the scores of the waking control groups used in the present study, and those used by Krauss et al. It was concluded that any facilitatory effect of hypnotic time distortion on free-recall learning still awaits a definitive demonstration.     

Titchener’s ⊥ with its lines tilted—A partial replication and extension of Cormack and Cormack (1974)

Following Cormack and Cormack (Perception & Psychophysics, 16, 208–212, 1974), modified versions of Titchener’s (Experimental Psychology, Vol. 1, Pt. 1, 1901) ⊥, in which the ⊥’s lines were tilted (Experiment 1), or tilted and dissected into two separate lines (Experiment 2), were used as stimuli. In Experiment 1, the overestimation of the length of the ⊥’s vertical, undivided line tended to decrease with its tilt relative to the horizontal, divided line. For ⊥s rotated 90° or 270°, the divided line was tilted, and the overestimation of the length of the now horizontal, undivided line vanished except for ⊥s with orthogonal lines. Separation of the ⊥’s lines in Experiment 2 led to an attenuation of the overestimation of the length of the undivided line for the default ⊥, and an underestimation of the length of this line for rotated ⊥s. Results only partly confirm Cormack and Cormack, probably because of the different psychophysical methods used. Findings support the notion of a T-schema as a coherent unit in midlevel visual processing, but also suggest medium- and long-range interactions between orientation-sensitive neural mechanisms.     

Potassium chloride preference in normal,sodium—and sodium—potassium—deficient rats

KCl water preference was examined in diet-replete, sodium-and sodium—potassium-deficient postpubertal rats of different ages. While diet-replete rats displayed a KCl preference-aversion profile similar to that found using other salts, when retested 30 days later, these same animals had no KCl preference. Na-and Na—K-deficient rats preferred KCl over a broad range of concentrations when tested in early postpuberty and the Na—K-deficient group had a markedly reduced KCl preference threshold (0.12%) when compared to all other groups in the study. But Na-and Na—K-deficient rats older by 2 1/2 months did not prefer KCl. The notion of specific food hungers can be invoked to account for some of the preferences. But hedonics, age and KCl experience must also be considered based on (1) the quantities of KCl consumed, (2) the preference reversals within animals, as well as (3) the significantly increased heart—and kidney—body weight ratios in the rats with the greatest KCl preference.     

Semantic processing in dichotic listening? A replication

This experiment explores semantic processing of one message while another is attended to and shadowed. It was an attempt to replicate and clarify an earlier finding by Lewis (1970). Like Lewis, we found that mean shadowing latency was increased when a synonym of the shadowed word coincided with it on the unattended channel. However, this occurred only with synonyms in an early list position and appeared to affect only a small proportion of trials. The implications of this and other recent findings for theories of selective listening are discussed.     

Motion analysis of dyadic talk during joint search and decision-making – A replication study

Human interaction frequently includes decision-making processes during which interactants call on verbal and non-verbal resources to manage the flow of interaction. In 2017, Stevanovic et al. carried out pioneering work, analyzing the unfolding of moment-by-moment dynamics by investigating the behavioral matching during search and decision-making phases. By studying the similarities in the participant's body sway during a conversation task in Finnish, the authors showed higher behavioral matching during decision phases than during search phases. The purpose of this research was to investigate the whole-body sway and its coordination during joint search and decision-making phases as a replication of the study by Stevanovic et al. (2017) but based on a German population. Overall, 12 dyads participated in this study and were asked to decide on 8 adjectives, starting with a pre-defined letter, to describe a fictional character. During this joint-decision task (duration: 206.46 ± 116.08 s), body sway of both interactants was measured using a 3D motion capture system and center of mass (COM) accelerations were computed. Matching of body sway was calculated using a windowed cross correlation (WCC) of the COM accelerations. A total of 101 search and 101 decision phases were identified for the 12 dyads. Significant higher COM accelerations (5.4*10⁻³ vs. 3.7*10⁻³ mm/s², p < 0.001) and WCC coefficients (0.47 vs. 0.45, p = 0.043) were found during decision-making phases than during search phases. The results suggest that body sway is one of the resources humans use to communicate the arrival at a joint decision. These findings contribute to a better understanding of interpersonal coordination from a human movement science perspective.     

Does mental practice still enhance performance? A 24 Year follow-up and meta-analytic replication and extension

ObjectivesMotor imagery (MI) is a dynamic mental state during which the representation of a given motor movement is rehearsed in working memory without overt motor output. Mental practice (MP; also known as motor imagery practice) is the systematic application of MI for the cognitive rehearsal of a task in the absence of overt physical movements. Although MP is known to enhance skilled performance, debate still exists about the magnitude and moderators of these imagery effects. Against this background, and amid concerns about the “reproducibility crisis” in psychology, it seems timely to revisit, update and extend a key meta-analysis of MP effects published over two decades ago – namely, that of Driskell, Copper, and Moran (1994). To this end, the present paper reports a methodological replication of the Driskell et al’s (1994) meta-analysis of MP effects.Design & methodIncluded are 37 studies on MP effects published between 1995 and 2018. Nine factors were selected to examine the extent to which they moderate the effectiveness of mental practice, providing a window into the conditions under which mental practice is most effectively implemented. Practice Type (Mental or Physical), Expertise, Duration of practice (both program and session), Task Type, and Control Type were retained as factors of interest from the original Driskell et al. (1994) meta-analysis. In order to further explore the nuance of mental practice implementation, we additionally examined the Imagery Type, the Performance Measure used, Activity Type (team versus individual activities) and the Setting of the intervention.ResultsFollowing publication bias analyses, our results confirm that overall, MP has a small but significant positive effect on performance (r = 0.131). Moderators of this beneficial effect were MP duration, type of task and type of imagery used.ConclusionsWe conclude that MP has an enduring positive influence on performance.     

What makes depressed people feel worse? A cross-cultural replication

Fifty non-patient Spanish adults in Valencia were asked in open-ended interviews, “when you're feeling depressed, what sort of things can make you feel worse?” Their responses were content analysed and compared to the similar data reported by Rippere (1980) for British subjects. As hypothesized, the English-speaking subjects showed a higher ratio of consensual to non-consensual items. They also produced more responses. Qualitative analysis of the two pools of items showed both characteristic similarities and differences. A corpus of situations which appear to make depressed people feel worse is derived from the items common to the Spanish and British data.     

Why do measures of normal and disordered personality correlate? A study of genetic comorbidity

The genetic and environmental correlations between measures of normal (NEO-FFI) and abnormal personality (Dimensional Assessment of Personality Pathology: DAPP-BQ) were estimated in a sample of 545 volunteer general population twin pairs (269 monozygotic and 276 dizygotic pairs). The largest genetic correlations were observed between the 18 DAPP-BQ dimensions and NEO-FFI neuroticism (range = .05 to .81; median = .48), extraversion (range = -.65 to .33; median = -.28), agreeableness (range = -.65 to .00; median = -.38), and conscientiousness (range = -.76 to .52; median = -.31). The smallest genetic correlations were found between the DAPP-BQ dimensions and NEO-FFI openness (range = -.17 to .20; median = -.04). The environmental correlations are lower in magnitude but show the same pattern of correlations between DAPP-BQ and NEO-FFI scales. These results indicate that these two scales share a common broad-based genetic architecture, whereas the environmental influences show greater scale specificity.     

A Group Journey—to Hell and Back

The process of a therapy group in an inpatient daycare unit¹ became saturated with anger and detachment, ultimately leading to a despairing silence. Based on Ferenczi’s concept of Orpha, I will explain the group silence as indicative of deep trauma and dissociative self-states. I propose that the therapist’s willingness to “hang in” with his group and be part of a seemingly unbearable enactment enhances the possibility for emergence of hope and restoration of positive communication. It is rare in the literature for authors to expose the pitfalls that they and their group members can fall into, leading to despair, shame, and hopelessness. When working in the complex environment of a mental hospital where every level of staff is stressed, therapists often find themselves without support and consultation. My hope is that my colleagues can learn from my challenges, errors, and lessons, as I have.     

Time and Singular Causation—A Computational Model

Causal queries about singular cases, which inquire whether specific events were causally connected, are prevalent in daily life and important in professional disciplines such as the law, medicine, or engineering. Because causal links cannot be directly observed, singular causation judgments require an assessment of whether a co-occurrence of two events c and e was causal or simply coincidental. How can this decision be made? Building on previous work by Cheng and Novick (2005) and Stephan and Waldmann (2018), we propose a computational model that combines information about the causal strengths of the potential causes with information about their temporal relations to derive answers to singular causation queries. The relative causal strengths of the potential cause factors are relevant because weak causes are more likely to fail to generate effects than strong causes. But even a strong cause factor does not necessarily need to be causal in a singular case because it could have been preempted by an alternative cause. We here show how information about causal strength and about two different temporal parameters, the potential causes' onset times and their causal latencies, can be formalized and integrated into a computational account of singular causation. Four experiments are presented in which we tested the validity of the model. The results showed that people integrate the different types of information as predicted by the new model.     

Immediate and remote time estimation — A comparison

The influence of the length of time elapsing between the termination of an interval on its estimated duration was tested in three experiments. In the first experiment, 89 subjects performed the W, C, and CW tasks of the Stroop color-word test. The duration of each of these three tasks, which was 10 second in reality, was estimated twice by every subject. Once, immediately upon completion of the task (IE), and a second time 90 seconds later (RE), both under prospective paradigm. The nature of the relationship between task difficulty and its estimated duration was found to be different in IE and RE. A negative relationship was found in IE while in RE no significant difference was found between difficulty levels. In the second experiment it was found that RE's trend was not caused by estimation order. In the third experiment IE and RE were tested under prospective and retrospective paradigms. In the perspective paradigm the results obtained in experiment 2 were replicated. In the retrospective paradigm the relationship between task difficulty and time estimation was, unlike the prospective paradigm, negative in both IE and RE. The significance of the results to time estimation theory was discussed.     

Infants’ perception of goal-directed actions: A multi-lab replication reveals that infants anticipate paths and not goals

Influential developmental theories claim that infants rely on goals when visually anticipating actions. A widely noticed study suggested that 11-month-olds anticipate that a hand continues to grasp the same object even when it swapped position with another object (Cannon, E., & Woodward, A. L. (2012). Infants generate goal-based action predictions. Developmental Science, 15, 292–298.). Yet, other studies found such flexible goal-directed anticipations only from later ages on. Given the theoretical relevance of this phenomenon and given these contradicting findings, the current work investigated in two different studies and labs, whether infants indeed flexibly anticipate an action goal. Study 1 (N = 144) investigated by means of five experiments, under which circumstances (e.g., animated agent, human agent) 12-month-olds show flexible goal anticipation abilities. Study 2 (N = 104) presented 11-, 32-month-olds and adults both a human grasping action as well as a non-human action. In none of the experiments did infants flexibly anticipate the action based on the goal, but rather on the movement path, irrespective of the type of agent. Although one experiment contained a direct replication of Cannon and Woodward (2012), we were not able to replicate their findings. Overall our work challenges the view that infants are able to flexibly anticipate action goals from early on, but rather rely on movement patterns when processing other’s actions.     

Do lateral eye movements increase susceptibility to misinformation? A registered replication

Psychonomic Bulletin & Review -     

Environment and high IQ—A consideration of fluid and crystallized intelligence

Attention is drawn to some causes of distancing between fluid and crystallized intelligence through detailed testing, environmental observations and responses of 210 children, their families and teachers. High Gc children (with IQ scores of 141+) were associated with educationally-superior home backgrounds, but not with abnormal emotional or personality features. High Gf children (99th% Raven's scorers) were found to reflect specifically the Cultural Milieu and Achievement-Related Facilities of their homes in their high IQ scores, but where Gf was insufficiently provided with opportunity, Gc appeared to suffer.Calculated proportions of fluid and crystallized intelligence in high IQ were varied, the scores becoming more heavily loaded with environmental influences towards the top of the scale, being 26% for children of exceptionally-high Gf and 13% for those of average to high Gf. It is suggested that where an IQ test is used, a cut-off point of IQ 130 be taken for the identification of intellectually-gifted children, along with verbal and other specific-ability tests.     

Forgiveness, Empathy and Gender—A Malaysian Perspective

Recent theorising has suggested that in non-Western collectivist contexts, the need for social harmony may play a greater role than empathy in motivating forgiveness, and that women may be more impacted than men by this cultural value. In this study, a sample of 233 Malaysian undergraduate students, 100 males and 133 females, recruited from four English-mediated universities completed the Interpersonal Reactivity Index (IRI) and the Transgression-Related Interpersonal Motivations Inventory-12 (TRIM-12) to assess dimensions of empathy and forgiveness. Women exhibited greater empathic concern than men, but not greater perspective-taking. Men were less forgiving in terms of revenge-seeking behaviour, but men and women did not differ in avoidance of transgressors. The relationships between empathic concern and both facets of forgiveness were similar for men and women, as was the relationship between empathic concern and avoidance. However, the relationship between perspective-taking and avoidance was stronger among men than women. We found little support for the prediction that in this collectivist cultural context, perspective-taking would play a greater role than empathic concern in forgiveness. Further research is recommended to explore empathy and forgiveness in non-Western populations, with a need to take into account cultural factors.