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Highlights • The response deprivation hypothesis culminated in the disequilibrium approach. • The disequilibrium models predict reinforcement and punishment effects. • Disequilibrium conditions are distinguished from motivating operations. • The effects of disequilibrium conditions on generalization and maintenance are considered. • The disequilibrium approach increases the precision with which behavior analysts can predict and control behavior. Abstract Disequilibrium theory is an approach to reinforcement that reconsiders the putative response strengthening prowess of stimuli. This disequilibrium approach—the pinnacle of the response deprivation hypothesis—reliably predicts changes in behavior without reference to a response strengthening process. While the strengthening model of reinforcement has received renewed and critical appraisal in behavior analysis, its appraisers have not fully considered the role that a disequilibrium conceptualization might play in their respective theories of reinforcement. In this essay we celebrate William Timberlake's legacy by elucidating the assumptions of disequilibrium theory and by exploring its predictions and implications within behavior analysis. We treat the disequilibrium approach to reinforcement as the theory of reinforcement in behavior analysis, and in doing so, we distinguish disequilibrium conditions from motivating operations and explore future directions regarding the potential to predict generalization and maintenance outcomes. The disequilibrium approach to reinforcement is not a mere deprivation operation used for the purposes of establishing a stimulus as a "reinforcer," as it is a general theory of behavior. [ABSTRACT FROM AUTHOR]

Response disequilibrium is the perturbation of unconstrained behavior with a contingency. For example, the imposition of advertisements before or after viewing TikTok videos. The purpose of this laboratory analogue was to determine the effects of two such response disequilibrium conditions: (1) which required participants to view 5 s increments of advertisements to access 2 s increments of TikTok videos and (2) which required participants to view 5 s increments of TikTok videos to access 15 s increments of advertisements. The disequilibrium condition in (1) is called a response deficit due to the restricted access to TikTok videos relative to baseline while (2) is called a response excess due to the overabundance of advertisements relative to baseline. Additionally, participants had access to a third activity that was freely available throughout. Participants could browse images of TikTok video thumbnails while in deficit and excess. As predicted, participants increased their viewing of advertisements when TikTok was in deficit and decreased their viewing of TikTok when advertisements were in excess. Furthermore, some participants substituted TikTok with browsing during the excess of advertisements. This investigation has implications for a behavioral economic analysis of social media use and the contingency management of time spent on these platforms. • Time spent viewing advertisements increased when TikTok videos were in deficit. • Time spent viewing TikTok videos decreased when advertisements were in excess. • Time spent browsing video thumbnails increased when advertisements were in excess. [ABSTRACT FROM AUTHOR]

We empirically investigate through an econometric approach the Romanian credit market, namely the lei-denominated part of it, and the factors that interact with it. The main goal is to assess whether a credit crunch ocurred in Romania during the economic crisis. To this end we employ the disequilibrium model framework, set up in economic literature some 40 years ago. Our investigation takes into consideration the main macroeconomic determinants of this market, that interact with demand and supply. Our approach has in view the macroeconomic variables such as output, interest rates and foreign currency credit. The demand and supply function are estimated through the maximization of a certain maximum likelihood function. The final conclusion is that, based on the estimated model, one cannot detect a credit crunch in the after-crisis period. This paper’s results show that empirically-constructed disequilibrium models can be used to properly describe the behavior of the lei-denominated credit market, by taking necessary precautions.

In this paper, we study the restricting factors leading to the disequilibrium condition in the Iranian market for bank’s credit using the switching regression model for the period 1353-1383 (1974-2004). The results of our study show that the real banking interest rate, real money supply, real banks reserves in central bank, and monetary base have significant relationship with credit supply. Also, the estimation of credit demand shows a positive relationship between the lag of the real deposits and credit demand. The interesting point is the insignificant relationship between the credit demand and the banking interest rate in the study period, but a high significant relationship between supply and the banking interest rate . This implies that the restricting factor in the credit market is the supply side which has always been less than the demand. An estimation of the market clearing banking interest rates in comparison with the real observed interest rates in recent years also confirms the result .

This paper attempts to pin down the key drivers of demand for and supply of real private sector credit in Pakistan. I use both the equilibrium and disequilibrium econometric frameworks, specifically tackling the issue of lack of consistency and/or efficiency of joint estimators in the former via the three-stage least squares technique. On the demand side, I find that higher economic activity provides stimulus to credit whereas inflation dampens it. The stock market seems to play a dual role: as a source of alternative financing, a bullish market negatively impacts credit while, as an indicator of economic expectations, it provides a positive impetus. On the supply side, banks' lending capacity is found to be the major driver of credit while government borrowing has a crowding-out effect. Pakistan currently faces supply constraints, which might put an additional check on capacity utilization by firms, thus damaging growth prospects. The results have important policy implications. [ABSTRACT FROM AUTHOR]

We empirically investigate through an econometric approach the Romanian credit market, namely the lei-denominated part of it, and the factors that interact with it. The main goal is to assess whether a credit crunch ocurred in Romania during the economic crisis. To this end we employ the disequilibrium model framework, set up in economic literature some 40 years ago. Our investigation takes into consideration the main macroeconomic determinants of this market, that interact with demand and supply. Our approach has in view the macroeconomic variables such as output, interest rates and foreign currency credit. The demand and supply function are estimated through the maximization of a certain maximum likelihood function. The final conclusion is that, based on the estimated model, one cannot detect a credit crunch in the after-crisis period. This paper's results show that empirically-constructed disequilibrium models can be used to properly describe the behavior of the lei-denominated credit market, by taking necessary precautions. [ABSTRACT FROM AUTHOR]

We investigate through an econometric approach the credit market and the factors that interact with it. Our investigation tries to put into discussion the main macroeconomic determinants of credit market in Romania. Our approach is chiefly centered around es-sential macroeconomic variables related to industrial output, interest in banking indus-try, as well as to stock market aggregate in-dicators. This paper's results show that dis-equilibrium models can be used to properly model and describe, in the medium and short-run, the behavior of the credit market as a whole, by taking necessary precautions. [ABSTRACT FROM AUTHOR]

Since its appearance mobile telephony has shown a remarkably fast diffusion pattern in most advanced countries. This paper investigates technological and economic factors that have influenced the diffusion process of cellular phones, in particular the diffusion speed and the upper limit. The epidemic model widely used in diffusion studies is summarised and discussed highlighting the evolutionary disequilibrium nature of diffusion processes. Moreover, the econometric specification of some of the models distinguishes between long-run relationships and short-run adjustments to a continuously evolving pattern. We find that the new digital technology, which coincides with increased competition in both Italy and the UK, has made the process faster and increased the saturation level in Italy, but not in the UK; in Italy only the decreasing price of the handset has affected the diffusion process, whereas we find that, in addition to that, decreasing tariffs and increasing consumption expenditures have been significant in shaping the diffusion process of mobile telephony in the UK. [ABSTRACT FROM AUTHOR]

Nonlinear estimation problems have a unknown number of stationary points. Interval arithmetic is a promising method that eliminates all but the global optimum. Automatic differentiation provides users with a convenient method of computing the gradient and Hessian of nonlinear functions. These two can be combined to provide an efficient and convenient global optimization process. [ABSTRACT FROM AUTHOR]