learned the technique: Ever learned, Ever learned Ö Learned this technique 6-10 years ago, Ever learned Ö Learned this technique 11-20 years ago, and Ever learned Ö Learned this technique over 20 years ago (the omitted category is Never learned this technique). The eect on misreports associated with having learned a technique less than ve years ago is provided by the coecient on "Ever Learned".<sup>14</sup> The estimated parameters on these variables capture recall bias, as well as the role of experience with a particular technique. We are unable to disentangle these two eects, and the expected sign on the corresponding coecients is therefore ambiguous. Experience with a technique over time may improve familiarity and, hence, lead to higher precision in self-reporting. The opposite is true for recall decay.

Finally, we control for the duration of the CAPI portion of the household interview to account for survey fatigue, and include enumerator indicators to purge our estimates from any measurement error associated with the transcription process and enumerator idiosyncrasies.<sup>15</sup> One limitation of the analysis is the ability to identify biases associated with respondent's attitudes. We are unable to capture these dimensions of one's personality with variables available on the survey instrument, and certainly the eects measured on the regression parameters may be inuenced by the omission of such variables. The cross-sectional nature of the survey data also precludes the inclusion of individual xed eects which would greatly reduce the tendency for bias caused by unobserved individual-specic characteristics that inuence false reporting. For these reasons, the estimated coecients should be largely interpreted as correlations rather than causal drivers of false reporting.

We present the estimated marginal eects of variables on the false reporting of knowledge and adoption in Tables 5 and 6.<sup>16</sup> Somewhat surprisingly, autonomy as measured by one's marital

> 14For a farmer who learned the technique 6 years ago, the eect is measures as the sum of the coecients on "Ever learned" and "Ever learned Ö Learned this technique 6-10 years ago". Similar computations are made to measure dierent durations since receipt of training.

> 15As a measure of recall decay, we initially used the dierence in the days between the rst interview date in the household's district and the actual interview date of each household. The average dierence in days (56) was rather low relative to previous work. The estimated parameters on the recall variable were statistically equivalent to zero. Adding a squared term to the model only conrmed a lack of correlation. We also tried to exploit the presence of a randomized intervention in our study areas to create an exogenous measure of exposure to SLM techniques in our sample. Communities that received the treatment had contact farmers who were trained in SLM techniques, fteen months prior to the survey (Kondylis, Mueller, and Zhu, 2014). The parameters on the treatment variable were also statistically insignicant.

> 16We also estimated linear probability and probit models including district (rather than enumerator) indicators. Factors that aect false reporting are consistent across the two models with the same sign and magnitude. Statistical signicance for a few coecients varies across models, particularly when the statistical signicance is marginal in one specication and insignicant in the other (see Tables A.3 and A.4).

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