Conditioning of Affect to a Neutral Stimulus: Number of Trials

1975 ◽  
Vol 40 (3) ◽  
pp. 895-901 ◽  
Author(s):  
Donald H. Sachs
Keyword(s):  
Interpersonal Attraction ◽  
Evaluation Process ◽  
Neutral Stimulus ◽  
Important Variable ◽  
Control Groups ◽  
Geometric Figure ◽  
Conditioning Model ◽  
Before And After ◽  
Stimulus Number

A conditioning model can be used to explain the evaluation process and interpersonal attraction. Since number of trials is an important variable in conditioning research, it was predicted that evaluation of a neutral stimulus should become progressively more positive with trials when paired with positive reinforcers and it should become more negative when paired with negative reinforcers. Subjects in the experimental groups were presented with 15 paired presentations of a geometric figure and attitudes that were either similar or dissimilar. Subjects in the control groups were presented with attitudes without the figure. Evaluations of the figure were made before and after the presentations. Evaluations became more negative over trials when the figure was paired with dissimilar attitudes, but there was no change when it was paired with similar attitudes (Groups × Trials interaction, p < .001). There was no change over trials in the control groups. Differential awareness among the groups was not significant. The results demonstrate the utility of the conditioning model.

Effects of Time and Perceptual Orientation on Actors' and Observers' Attributions

1984 ◽  
Vol 58 (1) ◽  
pp. 23-30
Author(s):  
Donald S. Martin ◽  
Ming-Shiunn Huang
Keyword(s):  
Video Recording ◽  
Control Group ◽  
Control Groups ◽  
Video Recordings ◽  
Before And After ◽  
Perceptual Orientation ◽  
Initial Difference ◽  
Variety Show ◽  
And Control ◽  
Unrelated Variety

The actor/observer effect was examined by Storms in a 1973 study which manipulated perceptual orientation using video recordings. Storms' study was complex and some of his results equivocal. The present study attempted to recreate the perceptual reorientation effect using a simplified experimental design and an initial difference between actors and observers which was the reverse of the original effect. Female undergraduates performed a motor co-ordination task as actors while watched by observers. Each person made attributions for the actor's behaviour before and after watching a video recording of the performance. For a control group the video recording was of an unrelated variety show excerpt. Actors' initial attributions were less situational than observers'. Both actors and observers became more situational after the video replay but this effect occurred in both experimental and control groups. It was suggested the passage of time between first and second recording of attributions could account for the findings and care should be taken when interpreting Storms' (1973) study and others which did not adequately control for temporal effects.

scholarly journals Robust Inferences from a Before-and-After Study with Multiple Unaffected Control Groups

2013 ◽  
Vol 1 (2) ◽  
pp. 209-234 ◽  
Author(s):  
Pengyuan Wang ◽  
Mikhail Traskin ◽  
Dylan S. Small
Keyword(s):  
Sensitivity Analysis ◽  
Control Groups ◽  
Two Stage ◽  
Time Effects ◽  
Unaffected Control ◽  
Group Time ◽  
Before And After ◽  
Group Variation ◽  
The Impact ◽  
Before And After Study

AbstractThe before-and-after study with multiple unaffected control groups is widely applied to study treatment effects. The current methods usually assume that the control groups’ differences between the before and after periods, i.e. the group time effects, follow a normal distribution. However, there is usually no strong a priori evidence for the normality assumption, and there are not enough control groups to check the assumption. We propose to use a flexible skew-t distribution family to model group time effects, and consider a range of plausible skew-t distributions. Based on the skew-t distribution assumption, we propose a robust-t method to guarantee nominal significance level under a wide range of skew-t distributions, and hence make the inference robust to misspecification of the distribution of group time effects. We also propose a two-stage approach, which has lower power compared to the robust-t method, but provides an opportunity to conduct sensitivity analysis. Hence, the overall method of analysis is to use the robust-t method to test for the overall hypothesized range of shapes of group variation; if the test fails to reject, use the two-stage method to conduct a sensitivity analysis to see if there is a subset of group variation parameters for which we can be confident that there is a treatment effect. We apply the proposed methods to two datasets. One dataset is from the Current Population Survey (CPS) to study the impact of the Mariel Boatlift on Miami unemployment rates between 1979 and 1982.The other dataset contains the student enrollment and grade repeating data in West Germany in the 1960s with which we study the impact of the short school year in 1966–1967 on grade repeating rates.

scholarly journals Effects of two different deep digital flexor tenotomy techniques on distal articular angles of equine cadaver forelimbs

2012 ◽  
Vol 42 (11) ◽  
pp. 2005-2010
Author(s):  
Antonio Cezar de Oliveira Dearo ◽  
Vitor Bruno Bianconi Rosa ◽  
Peter Reichmann ◽  
Milton Luis Ribeiro de Oliveira
Keyword(s):  
Quantitative Data ◽  
Statistical Significance ◽  
Surgical Approaches ◽  
Control Groups ◽  
Before And After ◽  
Distal Interphalangeal ◽  
The Difference ◽  
And Control ◽  
Flexor Tenotomy

Deep digital flexor (DDF) tenotomy is a technique employed for years to treat selected disorders of the musculoskeletal system in horses. Although two different surgical approaches (i.e. mid-metacarpal and pastern) have been described for performing the procedure, in vitro quantitative data regarding the modifications induced by either technique on the distal articular angles is lacking. Therefore, the purpose of the study reported here was to investigate the viability of a proposed biomechanical system of induced-traction used to compare the two DDF tenotomy techniques by measuring the distal articular angles of equine cadaver forelimbs. Ten pairs of forelimbs were collected and mounted to a biomechanical system developed to apply traction at the toe level. Dorsal articular angles of the metacarpophalangeal (MP), proximal interphalangeal (PIP) and distal interphalangeal (DIP) joints were determined by geometric lines on radiographs taken before and after performing each technique. Comparisons between each tenotomy group and its own control, for each joint, and between the two tenotomy groups using as variable the difference between the tenotomy and control groups were tested. Despite the lack of statistical significance, the DDF tenotomy technique at the pastern level produced extension, to a lesser and greater extent, of the PIP and DIP joints, respectively when compared to the mid-metacarpal level. No remarkable differences could be observed for the MP joint. The developed traction-induced biomechanical construct seemed to be effective in producing valuable quantitative estimations of the distal articular angles of equine cadaver forelimbs subjected to different DDF tenotomy techniques.

Effects of Depressed Mood Induction on Reasoning Performance

1988 ◽  
Vol 66 (3) ◽  
pp. 855-860 ◽  
Author(s):  
Russell A. Radenhausen ◽  
James M. Anker
Keyword(s):  
Depressed Mood ◽  
Mood Induction ◽  
Neutral Stimulus ◽  
Induction Procedure ◽  
Before And After ◽  
Perceptual Performance ◽  
Performance Results ◽  
The Relationship ◽  
Perceptual Measure ◽  
Mood Induction Procedure

The relationship between depressed mood, reasoning and perceptual performance was examined with 57 undergraduate volunteers. To intensify its effect, Velten's 1968 mood induction procedure was modified by having subjects hear a prerecording of each mood statement prior to saying it themselves. Also, midway through the experiment subjects completed an abbreviated mood induction to ensure continuation of the appropriate mood. Ratings of subjects' mood on a 13-point Likert scale before and after mood induction indicated the mood induction was effective. Subjects completed the reasoning measure of 48 syllogisms, and the perceptual measure involving identification of positive, negative, or neutral stimulus words presented tachistoscopically. “Depressed” individuals showed poorer reasoning performance of marginal significance than “elated” subjects. Mood induction did not appear to affect perceptual performance. Results are discussed in terms of the research on reasoning deficits in depression.

CPP-ACP: Effect on Dental Plaque Acidity after Water Rinsing Following Topical Fluoride Therapy

2017 ◽  
Vol 41 (1) ◽  
pp. 22-26 ◽  
Author(s):  
Mazhari Fatemeh ◽  
Sharifi Marjan ◽  
Noorollahian Homa ◽  
Sharifi Mahsa
Keyword(s):  
Dental Plaque ◽  
Sucrose Solution ◽  
Inhibitory Effect ◽  
Control Groups ◽  
Treatment Protocols ◽  
Challenge Study ◽  
Plaque Ph ◽  
Before And After ◽  
Water Rinsing ◽  
Topical Fluoride

Objectives: There is some evidence that water rinsing immediately after topical fluoride therapy has the potential to reduce the effectiveness of fluoride. The aim was to determine if covering fluoridated teeth with a layer of mousse containing CPP-ACP could prevent the adverse effect of rinsing on fluoride and consequently its buffering effect on dental plaque pH during cariogenic challenge. Study design: This randomized, controlled, crossover, in situ study was conducted on 25 participants. The participants were subjected to acidulated phosphate fluoride (APF) application followed by five treatment protocols: (1) water rinsing after 30 minutes (APF-30) or (2) immediate water rinsing (APF-0); (3) using CPP-ACP immediately before water rinsing (F-CPP-ACP); and two control groups: (4) no fluoride therapy (No-F) and (5) using CPP-ACP and immediate water rinsing (CPP-ACP-0). After 48 hours, teeth were rinsed with 10% sucrose solution and plaque pH was measured before and after 5, 10, 15, 20 and 30 minutes. Results: The least pH changes, the lowest pH drop, and the quickest pH recovery were found in the APF-30 and F-CPP-ACP groups. APF-0 ranked in the middle and the highest values were in the control groups. Conclusions: The results show that in the case using CPP-ACP on fluoridated teeth, water rinsing immediately after topical fluoride therapy did not seem to influence the inhibitory effect of fluoride on plaque acidity.

scholarly journals Effect of Cold Dialysis Solution on the Sexual Dysfunction of Patients with Chronic Renal Failure Undergoing Hemodialysis: A Randomized Clinical Trial

2021 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Rahele Hassanpour Moghaddam ◽  
Fatemeh Nazemian ◽  
Sedigheh Rastaghi ◽  
Mostafa Rad
Keyword(s):  
Sexual Dysfunction ◽  
Sexual Function ◽  
Female Sexual Function ◽  
Control Groups ◽  
Male And Female ◽  
Dialysis Solution ◽  
Significant Difference ◽  
Before And After ◽  
And Control ◽  
Experimental Group

Background: The present study aimed to evaluate the effect of cold dialysis solution on the sexual dysfunction of patients with chronic renal failure undergoing hemodialysis. Methods: This randomized clinical trial was conducted with a before and after parallel design among 60 hemodialysis patients diagnosed with sexual dysfunction. The selected subjects were randomly allocated to the two groups of experimental and control (30 per each). Patients in the experimental and control groups underwent hemodialysis for one month using 35.5°C and 37°C dialysis solutions, respectively. Following the procedure, male and female sexual function was assessed in the study groups. Data were collected using the International Index of Erectile Functions, the female sexual function index (FSFI), and a demographic questionnaire. Data analysis was performed using Chi-square, Fisher's exact test, Mann-Whitney U test, t-test, paired t-test, and Wilcoxon test at 95% confidence interval. Results: No significant difference was observed between the experimental and control groups regarding male sexual function before and after the intervention (P > 0.05). However, the Mann-Whitney U test indicated a significant difference in the female subjects’ arousal in the experimental group before (3.68 ± 0.38) and after the intervention (3.98 ± 0.46; z = 2.216; P = 0.027). Conclusions: Cold dialysis solution could only increase the sexual arousal of the women in the experimental group, and no changes were observed in other sexual function domains of the male and female patients. Given the short duration of our intervention, it is recommended that further longitudinal studies be performed on larger cohorts of patients in different geographical regions.

scholarly journals Effect of iRoot BP Plus Pulpotomy for Immediate Repair in Children with Young Permanent Teeth Crown Fracture

2020 ◽  
Vol 4 (2) ◽  
Author(s):  
Jiaying Song
Keyword(s):  
Success Rate ◽  
Clinical Effect ◽  
Permanent Teeth ◽  
Control Group ◽  
Observation Group ◽  
Control Groups ◽  
Before And After ◽  
Random Number Table ◽  
The Difference ◽  
And Control

Objective: To explore the clinical effect of iRoot BP Plus pulpotomy for immediate repair in children with young permanent teeth crown fracture. Methods: From September 2017 to October 2018, 80 children (80 affected teeth) with young permanent teeth crown fracture who treated in the hospital were selected as the research objects. Random number table method was used to divide them into observation and control groups with each group of forty patients (40 affected teeth). The children in the control group were treated with calcium hydroxide resin, while the observation group were treated with iRoot BP Plus for immediate repair. The surgical success rate was compared between the two groups, and the pulp vitality before and after treatment were compared. Results: At 3 months and 6 months after surgery, the success rate of children in the observation group was higher than that in the control group, and the difference was statistically significant (P<0.05). The percentage of children with negative pulp activity in the observation group was higher than that in the control group, and the difference was statistically significant (P<0.05). Conclusion: Immediate repair with iRoot BP Plus pulpotomy in children with young permanent teeth crown fracture has significant clinical effect.

scholarly journals PENGARUH SENAM OTAK TERHADAP PENINGKATAN MOTORIK KASAR PADA ANAK USIA 4-6 TAHUN

2018 ◽  
Vol 8 (2) ◽  
pp. 8-13
Author(s):  
Lina Madyastuti R ◽  
Retno Twistiandayani ◽  
Arifatul Widya Rahayu
Keyword(s):  
Sampling Method ◽  
Control Groups ◽  
Gross Motor ◽  
Brain Gym ◽  
Treatment Groups ◽  
Before And After ◽  
Independent Variable ◽  
Motor Improvement ◽  
Brain And Spinal Cord ◽  
The Brain

Children aged 4-6 years the most prominent development is motor, motor is closely related to physical activity. Gross motor is the development of motion control through the coordinated between the nerves, brain and spinal cord. One way to optimize the use of all the dimensions of the brain is brain gymnastics. Doing brain gym is one type of nonfarmacologis therapy that serves to improve the gross motor. The purpose of this study was to the effect of brain gym on gross motor improvement in children aged 4-6 years. This research method  used Quasy experimentalwith two control groups and treatment groups. Sample was selected using the Purposive Sampling method. Samples obtained as many 30 children. Independent variable in this study ware brain gym, while the dependent variable in this study was the change rough motor of children aged 4-6 years. Data collected before and after the intervention. Analysis used of the data used stastical test of  Wilcoxon Signed Ranks Test with the  value <0.05. The results of research showed value significant (2-tailed) = 0.001 meaning there was influence of brain gym to the increase of gross motor in children aged 4-6 years. By giving the brain gym will provide stimulation of the brain so as to improve the coordination of the eyes and hands that can improve the development of gross motor in children.

scholarly journals μ-Opioid modulation in the rostral solitary nucleus and reticular formation alters taste reactivity: evidence for a suppressive effect on consummatory behavior

2011 ◽  
Vol 301 (3) ◽  
pp. R690-R700 ◽  
Author(s):  
Nicole R. Kinzeler ◽  
Susan P. Travers
Keyword(s):  
Reticular Formation ◽  
Neural Control ◽  
Suppressive Effect ◽  
Neutral Stimulus ◽  
Endogenous Opioids ◽  
Facilitatory Effect ◽  
Consummatory Behavior ◽  
Taste Reactivity ◽  
Before And After ◽  
Ventral Border

The neural control of feeding involves many neuromodulators, including the endogenous opioids that bind μ-opioid receptors (MORs). Injections of the MOR agonist, Damgo, into limbic and hypothalamic forebrain sites increase intake, particularly of palatable foods. Indeed, forebrain Damgo injections increase sucrose-elicited licking but reduce aversive responding (gaping) to quinine, suggesting that MOR activation may enhance taste palatability. A μ-opioid influence on taste reactivity has not been assessed in the brain stem. However, MORs are present in the first-order taste relay, the rostral nucleus of the solitary tract (rNST), and in the immediately subjacent reticular formation (RF), a region known to be essential for consummatory responses. Thus, to evaluate the consequences of rNST/dorsal RF Damgo in this region, we implanted rats with intraoral cannulas, electromyographic electrodes, and brain cannulas aimed at the ventral border of the rNST. Licking and gaping elicited with sucrose, water, and quinine were assessed before and after intramedullary Damgo and saline infusions. Damgo slowed the rate, increased the amplitude, and decreased the size of fluid-induced lick and gape bouts. In addition, the neutral stimulus water, which typically elicits licks, began to evoke gapes. Thus, the current results demonstrate that μ-opioid activation in the rNST/dorsal RF exerts complex effects on oromotor responding that contrast with forebrain effects and are more indicative of a suppressive, rather than a facilitatory effect on ingestion.

Effect of Curcumin on Serum Cathepsin D in Patients with Metabolic Syndrome

2020 ◽  
Vol 20 (2) ◽  
pp. 116-121
Author(s):  
Leila Shirmohammadi ◽  
Majid Ghayour-Mobarhan ◽  
Maryam Saberi-Karimian ◽  
Mehrdad Iranshahi ◽  
Shima Tavallaie ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Cathepsin D ◽  
International Diabetes Federation ◽  
Control Groups ◽  
Anthropometric Indices ◽  
Elisa Kit ◽  
Significant Difference ◽  
Before And After ◽  
Post Trial ◽  
And Control

Background: Inflammation has been shown to accompany Metabolic Syndrome (MetS) and its features. Cathepsin D is one of a proinflammatory mediator. In the current study, we aimed to investigate the effect of curcumin supplementation on serum cathepsin D levels in patients with MetS. Methods: The current study was conducted on 18-65 years old individuals with MetS diagnosed according to the International Diabetes Federation guidelines. A total of 80 participants were randomly divided into treatment and control groups. The first group (n=40) was given 2 capsules containing 500 mg of phosphatidylcholine complex of curcumin, and the other group (n=40) was given two 500 mg placebo capsules for 6 weeks. Before (week 0) and after (week 6) the intervention, anthropometric indices and blood pressure were measured and blood samples were taken. Serum cathepsin D was measured using an ELISA kit. Results: There was no significant difference between treatment and control groups in terms of weight, body mass index, waist circumference and serum cathepsin D levels before and after the intervention. In addition, there was no significant difference between pre- and post-trial values of serum cathepsin D. Conclusion: The present results do not suggest any effect of curcumin on cathepsin D levels in patients with MetS.

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