Parent skills and information asymmetries: Experimental evidence from home visits and text messages in middle and high schools

2018 ◽  
Vol 66 ◽  
pp. 92-103 ◽  
Author(s):  
Peter Bergman ◽  
Chana Edmond-Verley ◽  
Nicole Notario-Risk
Author(s):  
Christian Breunig ◽  
K. Jonathan Klüser ◽  
Qixuan Yang

AbstractOne of the structural problems of introductory lectures is that students’ learning progress is primarily assessed by taking a final exam. Weekly preparation and reading are driven only by self-motivation. Can a student’s decision to complete her weekly assignments be influenced by a simple reminder? In a pre-registered experimental design, we test if personalised reminders from the instructor delivered via text messages contribute to learning outcomes. We assess formative learning via regular quizzes at the beginning of each class, and summative learning via grades in a final exam. We do not find statistically significant differences in learning outcomes, and discuss how design features potentially drive this result. In the conclusion, we stress the importance of experimental design in assessing innovative and new learning techniques.


2021 ◽  
Author(s):  
Markus Arnold ◽  
Florian Elsinger ◽  
Frederick W. Rankin

This study investigates how headquarters’ involvement affects the efficiency of transfer price negotiations. Although prior research explores autonomous transfer price negotiations, evidence suggests that headquarters can become involved in these negotiations, particularly after they fail. Although the likely intention of headquarters’ involvement is to overcome inefficiencies arising from decentralized managers’ inability to agree on a transfer price, we suggest that such involvement can reduce agreement frequency and the efficiency of transfer pricing in coordinating transfers between divisions. Reduced agreement may occur because involvement can reduce managers’ perceived responsibility for the negotiation outcome and because they may expect headquarters’ decision to be more favorable for them than a negotiated price. Headquarters’ involvement can also reduce the coordination efficiency of transfer pricing because of information asymmetries and headquarters’ decision biases in interpreting negotiation failure and using available information. In an experiment, we manipulate whether headquarters’ involvement is absent or present. We also manipulate whether headquarters suggests a nonbinding price (weak involvement) or whether it imposes a price on divisions (strong involvement). Consistent with our predictions, we find that headquarters’ involvement reduces the frequency of negotiation agreement and the coordination efficiency of transfer pricing. Efficiency is reduced more when involvement is strong rather than weak. We contribute to research by studying managers’ negotiation behavior in the realistic setting of potential headquarters’ involvement and by providing evidence on headquarters’ biased perceptions of negotiation impasse and the unintended consequences of its involvement. This paper was accepted by Brian Bushee, accounting.


2019 ◽  
Vol 42 ◽  
Author(s):  
Olya Hakobyan ◽  
Sen Cheng

Abstract We fully support dissociating the subjective experience from the memory contents in recognition memory, as Bastin et al. posit in the target article. However, having two generic memory modules with qualitatively different functions is not mandatory and is in fact inconsistent with experimental evidence. We propose that quantitative differences in the properties of the memory modules can account for the apparent dissociation of recollection and familiarity along anatomical lines.


1997 ◽  
Vol 161 ◽  
pp. 437-442
Author(s):  
Salvatore Di Bernardo ◽  
Romana Fato ◽  
Giorgio Lenaz

AbstractOne of the peculiar aspects of living systems is the production and conservation of energy. This aspect is provided by specialized organelles, such as the mitochondria and chloroplasts, in developed living organisms. In primordial systems lacking specialized enzymatic complexes the energy supply was probably bound to the generation and maintenance of an asymmetric distribution of charged molecules in compartmentalized systems. On the basis of experimental evidence, we suggest that lipophilic quinones were involved in the generation of this asymmetrical distribution of charges through vectorial redox reactions across lipid membranes.


Author(s):  
Michael T. Bucek ◽  
Howard J. Arnott

It is believed by the authors, with supporting experimental evidence, that as little as 0.5°, or less, knife clearance angle may be a critical factor in obtaining optimum quality ultrathin sections. The degree increments located on the knife holder provides the investigator with only a crude approximation of the angle at which the holder is set. With the increments displayed on the holder one cannot set the clearance angle precisely and reproducibly. The ability to routinely set this angle precisely and without difficulty would obviously be of great assistance to the operator. A device has been contrived to aid the investigator in precisely setting the clearance angle. This device is relatively simple and is easily constructed. It consists of a light source and an optically flat, front surfaced mirror with a minute black spot in the center. The mirror is affixed to the knife by placing it permanently on top of the knife holder.


Author(s):  
H. Mohri

In 1959, Afzelius observed the presence of two rows of arms projecting from each outer doublet microtubule of the so-called 9 + 2 pattern of cilia and flagella, and suggested a possibility that the outer doublet microtubules slide with respect to each other with the aid of these arms during ciliary and flagellar movement. The identification of the arms as an ATPase, dynein, by Gibbons (1963)strengthened this hypothesis, since the ATPase-bearing heads of myosin molecules projecting from the thick filaments pull the thin filaments by cross-bridge formation during muscle contraction. The first experimental evidence for the sliding mechanism in cilia and flagella was obtained by examining the tip patterns of molluscan gill cilia by Satir (1965) who observed constant length of the microtubules during ciliary bending. Further evidence for the sliding-tubule mechanism was given by Summers and Gibbons (1971), using trypsin-treated axonemal fragments of sea urchin spermatozoa. Upon the addition of ATP, the outer doublets telescoped out from these fragments and the total length reached up to seven or more times that of the original fragment. Thus, the arms on a certain doublet microtubule can walk along the adjacent doublet when the doublet microtubules are disconnected by digestion of the interdoublet links which connect them with each other, or the radial spokes which connect them with the central pair-central sheath complex as illustrated in Fig. 1. On the basis of these pioneer works, the sliding-tubule mechanism has been established as one of the basic mechanisms for ciliary and flagellar movement.


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