| Literature DB >> 29070920 |
Sebastian Bobadilla-Suarez1,2, Cass R Sunstein3, Tali Sharot1.
Abstract
Human beings are often faced with a pervasive problem: whether to make their own decision or to delegate the decision task to someone else. Here, we test whether people are inclined to forgo monetary rewards in order to retain agency when faced with choices that could lead to losses and gains. In a simple choice task, we show that participants choose to pay in order to control their own payoff more than they should if they were to maximize monetary rewards and minimize monetary losses. This tendency cannot be explained by participants' overconfidence in their own ability, as their perceived ability was elicited and accounted for. Nor can the results be explained by lack of information. Rather, the results seem to reflect an intrinsic value for choice, which emerges in the domain of both gains and of losses. Moreover, our data indicate that participants are aware that they are making suboptimal choices in the normative sense, but do so anyway, presumably for psychological gains.Entities:
Keywords: Agency; Control premium; Decision rights; Delegation; Gains; Losses
Year: 2017 PMID: 29070920 PMCID: PMC5652145 DOI: 10.1007/s11166-017-9259-x
Source DB: PubMed Journal: J Risk Uncertain ISSN: 0895-5646
Fig. 1Task. a In the first part of the experiment—the Learning Task—participants were asked on each trial to choose between two shapes. If they successfully selected the shape associated with the better outcome they received £10 in the gain block and £0 in the loss block. If they were unsuccessful and selected the shape associated with the worse outcome they received £0 in the gain block and lost £10 in the loss block. b In the second part of the experiment—the Delegation Task—participants first chose whether they would like to retain agency and make the choice themselves or delegate the choice to an “artificial advisor” (a computer algorithm). They were presented with the advisor’s success rate and charge, and the pair of figures was shown at the time participants made the delegation choice. Outcomes were not revealed
Mixed Effects Model of Delegations
| Gains Model | ||||
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| Fixed Effects | ||||
| (Intercept) | −8.44 | 1.26 | −6.703 | <.001 |
| Expected Value | 11.02 | 0.98 | 11.29 | <.001 |
| Trial Number | −0.009 | 0.005 | −1.86 | 0.063 |
| Rho | 0.04 | 0.08 | 0.54 | 0.589 |
| Lambda | −0.02 | 1.68 | −0.01 | 0.991 |
| Losses Model | ||||
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| Fixed Effects | ||||
| (Intercept) | −6.42 | 1.05 | −6.12 | <.001 |
| Expected Value | 9.77 | 0.83 | 11.83 | <.001 |
| Trial Number | −0.02 | 0.005 | −3.06 | 0.002 |
| Rho | 0.09 | 0.07 | 1.27 | 0.2 |
| Lambda | −1.27 | 1.46 | −0.87 | 0.38 |
Coefficients (B), standard errors (SE), z statistics and p values for the mixed effects model in the Gains condition (top) and the Losses condition (bottom). The results reported here are the fixed effects
Fig. 2Delegation “Errors”. Participants were more likely to fail to delegate when delegation was optimal (orange bars) than fail to retain agency when retaining agency was optimal (blue bars). This was true for both blocks: (a) Gain block, (b) Loss block. ***p < 0.001. Error bars are standard errors of the mean
Fig. 3Indifference Points. The indifference point is the point when the probability of delegating is 50%. While a rational agent should be indifferent between retaining agency and delegating when an advisors’ expected value is £5 in the gain block and -£5 in the loss block (participant’s expected value is £5 in the gain block and -£5 in the loss block) the graphs clearly show that in practice the indifference point is greater than £5 in the gain block and -£5 in the loss block. This suggests that participants assign positive utility to choice. The grey lines show the intersection between 50% probability of delegation and the indifference curve. The curves shown here are the model predictions for the group average