Judgments of learning reflect encoding fluency: Conclusive evidence for the ease-of-processing hypothesis.

According to the ease-of-processing hypothesis, judgments of learning (JOLs) rely on the ease with which items are committed to memory during encoding—that is, encoding fluency. Conclusive evidence for this hypothesis does not yet exist because encoding fluency and item difficulty have been confounded in all previous studies. To disentangle the effects of encoding fluency and item difficulty on JOLs, we used a variant of the learner–observer–judge method in which participants observed the study phase of another participant and indicated his or her JOLs. At the same time, the to-be-studied word pairs were concealed by strings of symbols. Our experiment revealed that participants use self-paced study time as a cue for JOLs when they themselves have studied and recalled word pairs before. This metacognitive monitoring of study time provides strong support for the ease-of-processing hypothesis. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Nonspecific effects of exposure on stimuli that cannot be recognized.

The repeated exposure of unmasked irregular geometric shapes for very brief durations (1 or 2 ms) has been shown to generate preferences as well as judgments of familiarity for the previously exposed shapes. At the same time these stimuli are not recognized as having been presented. Such exposure also leads to judgments of brightness and darkness independent of stimulus intensity, and it is dependent on the use of unmasked stimuli. This effect is nonspecific, in contrast to stimulus-specific effects with masked stimuli, and it is not restricted to affective judgments. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Eggs of a female Japanese quail are more likely to be fertilized by a male that she prefers.

Male Japanese quail (Coturnix japonica) that conspecific females preferred in a 10-min, forced-choice test of affiliative preference were more likely than were males not preferred in such a test to fertilize females' eggs when subsequently mated with them, although preferred and nonpreferred males mated equally often with females. Further, the probability that a nonpreferred male would fertilize a female's eggs was significantly increased if she watched while he courted and mated with another female. The results indicate that in Japanese quail (a) affiliative preference reliably predicts females' choices of fathers for their offspring and (b) females may have some degree of control over whether the males with whom they mate actually fertilize their eggs. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Relating age at encoding in early childhood to adult recall: Development of flashbulb memories.

Asked 338 college and high school students, who had been 1–7 yrs old in 1963, to state their personal memories surrounding the assassination of President Kennedy and 6 other significant public events. The probability and degree of elaboration of recall showed a gradual growth with increasing age at the time of the event for the assassinations of John F. Kennedy and Robert F. Kennedy but not for the other events. Self-reports of amount of rehearsal showed a low correlation with recall. Recall was high for the resignation of President Nixon in 1974, suggesting that surprise is not necessary for the formation of enduring memories of significant events. Methodological advantages and disadvantages of studying early memories for public events are discussed. (23 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Can social behavior be influenced by events that we are unaware of?

Responds to the comments of K. A. Markus (see record 199810886-007), T. D. Nelson (see record 199810886-008), and M. C. Green et al (see record 199810886-008) referring to D. Kipnis's (see record 199707781-001) article analyzing social psychology's assumption that psychological states can explain social behavior. In the present reply, Kipnis addresses the arguments contained in the 3 aforementioned comments, and concludes with the assumption that the content of consciousness is explained by people's interactions with events in their world, and, further, that the understanding of social behavior will progress when theory and empirical research are extended to include societal events. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Urodynamic variables cannot be used to classify the severity of detrusor instability

We herein report a case of pyelitis cystica in 65-year-old woman. She was referred to our hospital in order to have a treatment for a stone in the ureter on left side. Excretory urogram showed hydronephrosis on left, and multiple, small, smooth and round filling defects in the renal pelvis on right side. ESWL was performed to the ureteral stone, and the stone was discharged completely in 4 days. Then further examinations were made for the filling defects of right renal pelvis. Nonopaque calculi were ruled out on retrograde pyelogram and CT scan. Urinary cytology from the renal pelvis was class I. Our impression was pyelitis cystica of right kidney. Under spinal anesthesia, ureterofiberscopy was performed. Multiple small cysts were observed in the pelvis and calyx, as well as cystitis cystica. Cold cup biopsy was also done and histopathological finding ws pyelitis cystica, without malignancy. We compared endoscopic findings with radiographic findings in 18 cases of pyloureteritis cystica from the Japanese literature. The radiographic findings were multiple small, in a uniform size, and round filling defects with regular contour, and the endoscopic findings were multiple white or ocher colored, half sphere or sphere shaped, and small cyst with smooth surface in 15 of 18 cases. We thought these findings were characteristic ones in pyloureteritis cystica. Endoscopy and biopsy are mandatory for diagnosis of pyeloureteritis cystica.     

Determinants of visual attention and recall in observational learning by preschoolers and second graders.

Asked 72 preschoolers and 72 2nd graders (equal numbers of boys and girls), who had observed a male or female model choose his "favorites" in a series of common object trios, to recall the model's choices. All Ss individually witnessed the procedure under a fixed level of distraction, under informed or uninformed instructions, and under 1 of 3 vicarious consequence treatments (reward, neutral, and punishment). Ss' overt visual attention to the modeled activity and their recall were analyzed. Results indicate (a) highly significant correlations between attention and recall, (b) a facilitation of attention and recall with informed instructions, (c) a facilitation of attention and recall under vicarious reward and vicarious punishment treatments only under uninformed instructions, and (d) an increase with age in relevant overt attention and recall. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Repetition learning in the immediate serial recall of visual and auditory materials.

In 5 experiments, a Hebb repetition effect, that is, improved immediate serial recall of an (unannounced) repeating list, was demonstrated in the immediate serial recall of visual materials, even when use of phonological short-term memory was blocked by concurrent articulation. The learning of a repeatedly presented letter list in one modality (auditory or visual) did not transfer to give improved performance on the same list in the other modality. This result was not replicated for word lists, however, for which asymmetric transfer was observed. Inferences are made about the structure of short-term memory and about the nature of the Hebb repetition effect. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Leonardo's constraint: Two opaque objects cannot be seen in the same direction.

Given Leonardo's constraint that 2 opaque objects cannot be seen in the same direction, how are the regions of objects occluded to 1 eye included in perception? To answer this question, the authors presented 3-dimensional stimuli, similar to the ones that concerned Leonardo, and measured the visual directions of their monocular and binocular regions. When the distance between near and far objects was large, the nonfixated object was seen as double and blurry. Leonardo's constraint was met by seeing the near object as double and transparent or the distant object as double and superimposed. When the distance between near and far objects was small, the constraint was met by a perceptual displacement and compression of parts of the nonfixated object. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Processes by which verbal-educational abilities are affected when mothers encourage preschool children to verbalize.

Devised a measure of mothers' (20–36 yrs old) encouragement of child-generated verbal responses from videotapes of 66 mothers teaching a block-sorting task to their children. Mothers were administered the WAIS, and children received the Peabody Picture Vocabulary Test and the Wechsler Preschool and Primary Scale of Intelligence at 3–6 yrs of age. Correlations and partial correlations of mothers' encouragement of verbalization with children's knowledge of letters and numbers were significantly stronger than those with Verbal and Performance IQ, which were nonsignificant. It is concluded that this pattern of correlations is consistent with a specific verbalization-helps-memory-of-content mechanism and inconsistent with a more global verbalization-generally-helps-thinking mechanism. (57 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Phonological skills are important in learning to read Chinese.

A4-year longitudinal study was conducted to examine the relationship between Chinese children's phonological skills and their success in reading. Initially, 100 Hong Kong Chinese children were tested on visual and phonological skills at the age of 3, before they could read. The findings showed that prereading phonological skills significantly predicted the children's reading performance in Chinese 2 and 3 years later, even after controlling for the effects of age, IQ, and mother's education. The main reason for this relationship is that phonological knowledge helps children to use the phonetic component in Chinese characters. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Anxiety-related behaviors in the elevated zero-maze are affected by genetic factors and retinal degeneration.

Anxiety levels were tested in an elevated zero-maze for 8 inbred strains of mice that are used widely in biomedical and behavioral research. Strain differences were observed for activity, latency to enter an open quadrant, open time, and defecation, demonstrating that genetic factors mediate anxiety in this paradigm. Three of the strains have the rdl mutation that causes retinal degeneration and were less anxious in the maze. To discern whether visual acuity is a source of difference on the maze, anxiety levels were tested in a congenic strain in which the rdl allele has been replaced with the wild-type allele. The congenic strain, with normal vision, had higher levels of anxiety. This study provides baseline data for the selection and use of any of these strains in pharmacological challenges in the maze, and provides a starting point of the identification of strains that may have appropriate backgrounds for targeted mutation studies. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Sarcoplasmic reticulum responses to repeated sprints are affected by conditioning of horses

Sarcoplasmic reticulum (SR) responses to repeated sprints and to physical conditioning were studied in 10 Quarter Horses. Exercise tests (four repeated sprints on a treadmill) were conducted before and after 12 wk of sprint conditioning. Muscle samples from the middle gluteal muscle were taken before and after each exercise test, and SR vesicles were isolated. Calcium uptake was determined spectrophotometrically using antipyrylazo III, and Ca2+-ATPase activity was determined using an enzyme-linked optical assay. Conditioning increased calcium uptake rate and Ca2+-ATPase activity by 14 and 38%, respectively, before exercise and by 25 and 26% after exercise. Exercise decreased calcium uptake rate and Ca2+-ATPase activity by 37 and 27%, respectively, before conditioning and by 28 and 21% after conditioning. Decreases in calcium uptake and Ca2+-ATPase activity of SR have been associated with fatigue during exercise, and this association is strengthened by the moderating effect of conditioning.     

When wait lists are not feasible, nothing is a thing that does not need to be done.

[Correction Notice: An erratum for this article was reported in Vol 78(3) of Journal of Consulting and Clinical Psychology (see record 2010-10440-011). There is an error in the computation of Equation 4 (p. 1165): z does not equal 2.44 as reported but, instead, equals 1.73. We had not divided by the denominator ( 2). This makes p(one-tailed) .042, not .007 as reported. The interpretation of this computation does not change, although the level of probability does. Rather than being confident that the two studies are from different populations with a p level of .007, we are still likely to see these studies as having obtained significantly different results but at the probability level of p .05.] Clinical psychology practices initially grew through the use of case studies, uncontrolled trials, and eventually through randomized controlled trials (RCTs). The use of a wait-list control group is standard practice in such trials of treatment regimens for psychopathological conditions. However, as knowledge advances regarding the successful treatment of such conditions, best practice guidelines are being developed. These guidelines have predominantly been based on the results of RCTs and use aggregating mechanisms, such as meta-analysis, to derive their conclusions. The authors argue here for statistical methods that allow for comparisons to existing data from wait-list controls for which the continued use of wait-list conditions has become problematic. Using posttraumatic stress disorder (PTSD) as an example, this article proposes various methods for obviating the need for a wait-list control under such circumstances. After conducting separate meta-analyses for both treatment and control conditions, the authors found that wait-list conditions do provide some benefit to participants with PTSD, but current best practice treatment conditions elicit far superior effect sizes. The various methods for evaluating a study without a wait-list control are proposed and demonstrated. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A description of the affective quality attributed to environments.

The meaning that persons attribute to environments is divided into perceptual cognitive meaning and affective meaning. Affective meaning is then conceptualized as a 2-dimensional bipolar space that can be defined by 8 variables falling in the following circular order around the perimeter: pleasant (arbitrarily set at 0°), exciting (45°), arousing (90°), distressing (135°), unpleasant (180°), gloomy (225°), sleepy (270°), and relaxing (315°, which is thus 45° from pleasant). Alternatively, the same space can be defined by 2 orthogonal bipolar dimensions of pleasant-unpleasant and arousing-sleepy, or equally well by exciting-gloomy and distressing-relaxing. Reliable verbal scales (based on data from 241 Ss) for these 8 variables were developed and shown to approximate the proposed theoretical structure. (28 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The adsorption of phloretin to lipid monolayers and bilayers cannot be explained by langmuir adsorption isotherms alone

Phloretin and its analogs adsorb to the surfaces of lipid monolayers and bilayers and decrease the dipole potential. This reduces the conductance for anions and increases that for cations on artificial and biological membranes. The relationship between the change in the dipole potential and the aqueous concentration of phloretin has been explained previously by a Langmuir adsorption isotherm and a weak and therefore negligible contribution of the dipole-dipole interactions in the lipid surface. We demonstrate here that the Langmuir adsorption isotherm alone is not able to properly describe the effects of dipole molecule binding to lipid surfaces--we found significant deviations between experimental data and the fit with the Langmuir adsorption isotherm. We present here an alternative theoretical treatment that takes into account the strong interaction between membrane (monolayer) dipole field and the dipole moment of the adsorbed molecule. This treatment provides a much better fit of the experimental results derived from the measurements of surface potentials of lipid monolayers in the presence of phloretin. Similarly, the theory provides a much better fit of the phloretin-induced changes in the dipole potential of lipid bilayers, as assessed by the transport kinetics of the lipophilic ion dipicrylamine.     

Short-term memory errors for spoken syllables are affected by the linguistic structure of the syllables.

Three experiments on short-term serial memory for spoken syllables are reported. The stimuli were CVC (consonant-vowel-consonant) syllables in Experiment 1, CCVs in Experiment 2, and VCCs in Experiment 3. Analyses of subjects' errors showed that the phonemes within a syllable were not equally free to break apart and recombine. Certain groups of phonemes—the vowel-final consonant group of a CVC, the initial cluster of a CCV, and a vowel-liquid group within a VCC—tended to behave as units. These results are consistent with the view that syllables are coded in terms of an onset (initial consonant or cluster) and a rime (remainder). Errors in short-term memory for spoken syllables are affected by the linguistic structure of the syllables. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Microsaccadic response to visual events that are invisible to the superior colliculus.

Even when people think their eyes are still, tiny fixational eye movements, called microsaccades, occur at a rate of –1 Hz. Whenever a new (and potentially dangerous) event takes place in the visual field, the microsaccadic frequency is at first inhibited and then is followed by a rebound before the frequency returns to baseline. It has been suggested that this inhibition-rebound response is a type of oculomotor reflex mediated by the superior colliculus (SC), a midbrain structure involved in saccade programming. The present study investigated microsaccadic responses to visual events that were invisible to the SC; the authors recorded microsaccadic responses to visual oddballs when the latter were equiluminant with respect to the standard stimuli and when both oddballs and standards were equiluminant with respect to the background. Results showed that microsaccadic responses to oddballs and to standards were virtually identical both when the stimuli were visible to the SC and when they were invisible to it. Although the SC may be the generator of microsaccades, this research suggests that the specific fixational oculomotor activity in response to visual events can be controlled by other brain centers. (PsycINFO Database Record (c) 2010 APA, all rights reserved)