The story of the "Vygotsky boom", aka "Vygotsky cult', dates back to late 1970s and has its logic of development. Jerome Bruner on a number of occasions in 1960s-1970s prophesied the "boom" to come, but all in vain. The turning point is 1978 and the publication of the fake, the quasi-Vygotsky's "Mind in Society" by Michael Cole and his collaborators, who appear to have expected the blow to their reputations not to mention fiscal losses the book would cause. The reasons why Vygotsky got so popular in the West thereafter are not of entirely clear nature, but a combination of factors could have been in play. They include the disappointment with Piaget (whose ideas were perceived as too "natalist" and "biological deterministic") and the need in another authority who could serve in support of educational optimism of the environmentalist, interventionist, and teacher-centered approach to learning and instruction. This one was termed "social constructivism". The publication of Toulmin's "The Mozart of psychology" essay might have played its role, too, but given that the main message of the paper -- the idea of the inseparable unity of the Vygotsky-Luria project of the "historical materialist" psychology -- apparently remained virtually totally unnoticed, the impact of this particular publication seems to have been minimal and chiefly propagandist. Since then, the star of Vygotsky -- exemplified by Michael Cole's "Mind in Society" has always been rising. In fact, it was rising until quite recently.

Indeed, if only Google Scholar is a trustworthy instrument in such matters, we clearly see that the number of references to the notorious "Mind in Society" has been continuously rising from 1979 until 2013. Yet, 2014 appears to be the break point: this was the first year when the number of quotes to this source slightly declined. Curiously, the number of quotes to another "Vygotskian star" -- cumulative quotes to the publications actually authored by Michael Cole -- also started its decline. This might suggest that what we experiencing now is the transition from the "Vygotsky boom" to the phase of the "Vygotsky bubble" that has already started shrinking and continues do so right at this very point.

Curiously, the disappointment with the "Vygotsky cult" has been explicitly expressed a lot of times from early 1980s up to now, and the phrase seems to have been first pronounced as early as 1991 (the credits go to Sheldon White). Yet, it took another "revolution" to be first openly stated in a publication of 2012 along with a series of critical studies of 2010s for the dramatic change to really take place. These studies were summarized in a most recent book project: Yasnitsky, A. & van der Veer, R. (Eds.) (2015/2016). Revisionist Revolution in Vygotsky Studies. London and New York: Routledge, -- followed by another one: Yasnitsky, A., van der Veer, R., Aguilar, E. & García, L.N. (Eds.) (in press, 2016). Vygotski revisitado: una historia crítica de su contexto y legado. Buenos Aires: Miño y Dávila Editores (in Spanish). It is not clear yet what other factors were in play, but the impact of the consolidated "Revisionist revolution" in the start of the collapse of the "Vygotsky bubble" seems to be very probable.

Yet, chances are that the trend might still reverse, which makes the whole game of guessing the future even more exciting and breath-taking. So, the bets are still accepted, and the question is: Will this year of 2015 continue the declining trend in the number of quotes to "Mind in Society" (whoever actually wrote it) and, by extension, the references to the cumulative published output by Michael Cole, in which his :) "Mind in Society" consistently comprises more than a half, if Google Scholar is to be trusted.

For the sake of curiosity, Google Scholar quote numbers will be monitored, recorded here, and updated on a regular basis. Only the decade of 2010s will be indicated in the table, below. Yet, the sources for the measurements are all online.
"Mind in Society": https://scholar.google.com/citations?view_op=view_citation&hl=en&user=djqLs50AAAAJ&citation_for_view=djqLs50AAAAJ:umqufdRvDiIC
Michael Cole: https://scholar.google.com/citations?user=djqLs50AAAAJ&hl=en

So, this is what we have as of today, [update:]November 3, 10, 20, 30, December 10, 20, 31, 2015; January 10, 20, 31; February 10, 20, 29, March 10, 20, 31, April, 10, 20, 30, May, 10, 20, 31, June 10, 20, 30, July 10, 20, 31, August 10, 20, 31, September 10, 20, 30, October 10, 20, 31, November 10, 20, 30 December 10, 20, 31, 2016:

"Mind in Society":

Date/Year	2010	2011	2012	2013	2014	2015	2016
31.12.2016	4424	4801	5227	5542	5585	5681	4582
20.12.2016	4423	4799	5218	5534	5576	5669	4450
10.12.2016	4416	4789	5189	5525	5569	5655	4288
30.11.2016	4416	4788	5178	5522	5566	5648	4171
20.11.2016	4414	4788	5175	5517	5560	5632	4004
10.11.2016	4416	4788	5175	5516	5556	5617	3917
31.10.2016	4412	4783	5169	5503	5547	5606	3774
20.10.2016	4409	4781	5164	5499	5540	5594	3655
10.10.2016	4404	4781	5161	5493	5536	5583	3571
30.09.2016	4403	4778	5163	5490	5530	5566	3449
20.09.2016	4401	4775	5146	5486	5526	5550	3313
10.09.2016	4395	4775	5145	5480	5518	5533	3183
31.08.2016	4393	4772	5143	5480	5516	5522	3073
20.08.2016	4391	4769	5138	5475	5511	5511	2913
10.08.2016	4389	4768	5133	5466	5504	5501	2808
31.07.2016	4381	4761	5123	5457	5482	5479	2679
20.07.2016	4377	4754	5119	5454	5479	5466	2553
10.07.2016	4374	4746	5119	5453	5478	5451	2401
30.06.2016	4368	4740	5104	5447	5468	5424	2248
20.06.2016	4363	4737	5102	5443	5467	5416	2127
10.06.2016	4327	4645	5019	5360	5342	5397	1758
31.05.2016	4299	4619	4966	5306	5251	5288	1595
20.05.2016	4291	4616	4949	5295	5237	5226	1392
10.05.2016	4292	4612	4947	5295	5232	5197	1262
30.04.2016	4292	4607	4943	5285	5224	5163	1131
20.04.2016	4287	4602	4936	5278	5206	5116	1012
10.04.2016	4286	4606	4937	5284	5206	5085	911
31.03.2016	4272	4590	4914	5267	5178	5015	824
20.03.2016	4283	4603	4927	5273	5195	4987	715
10.03.2016	4282	4599	4925	5269	5190	4953	636
29.02.2016	4273	4589	4911	5254	5172	4916	549
20.02.2016	4265	4584	4899	5243	5165	4874	484
10.02.2016	4251	4565	4879	5227	5125	4807	405
31.01.2016	4215	4524	4826	5246	5181	4467	246
20.01.2016	4213	4524	4822	5239	5182	4372	188
10.01.2016	4212	4525	4813	5242	5179	4372	128
31.12.2015	4207	4520	4807	5228	5170	4294	--
20.12.2015	4204	4514	4804	5219	5149	4137	--
10.12.2015	4202	4512	4802	5215	5143	3956	--
30.11.2015	4196	4508	4805	5210	5125	3883	--
20.11.2015	4194	4503	4800	5205	5112	3732	--
10.11.2015	4189	4506	4795	5201	5106	3627	--
03.11.2015	4187	4503	4799	5200	5093	3580	--

Michael Cole (including "Mind in Society" references, for comparison see the table above):

Date/Year	2010	2011	2012	2013	2014	2015	2016
31.12.2016	7634	8406	9224	9924	10095	10623	9057
20.12.2016	7623	8398	9206	9910	10073	10599	8806
10.12.2016	7607	8383	9155	9890	10041	10539	8424
30.11.2016	7598	8369	9119	9874	10016	10503	8137
20.11.2016	7599	8380	9130	9883	10015	10489	7849
10.11.2016	7603	8381	9131	9875	10004	10464	7675
31.10.2016	7600	8368	9117	9857	9997	10449	7398
20.10.2016	7592	8365	9108	9854	9981	10417	7117
10.10.2016	7585	8360	9109	9847	9973	10388	6924
30.09.2016	7582	8356	9104	9836	9955	10357	6658
20.09.2016	7579	8354	9077	9812	9945	10324	6387
10.09.2016	7573	8359	9069	9801	9929	10294	6118
31.08.2016	7566	8354	9067	9800	9925	10276	5916
20.08.2016	7562	8343	9056	9793	9907	10245	5591
10.08.2016	7563	8337	9049	9778	9896	10227	5377
31.07.2016	7541	8313	9030	9745	9853	10188	5132
20.07.2016	7536	8302	9023	9739	9848	10159	4881
10.07.2016	7527	8289	9019	9733	9843	10119	4619
30.06.2016	7517	8274	8993	9723	9816	10072	4328
20.06.2016	7506	8266	8991	9710	9809	10036	4112
10.06.2016	7367	8053	8810	9558	9541	9967	3323
31.05.2016	7303	7983	8709	9450	9380	9762	3021
20.05.2016	7142	7744	8398	9068	8944	9102	2526
10.05.2016	7118	7722	8378	9052	8918	9037	2297
30.04.2016	7117	7715	8375	9037	8899	8963	2077
20.04.2016	7114	7713	8367	9023	8874	8917	1893
10.04.2016	7114	7710	8372	9028	8869	8853	1700
31.03.2016	7097	7690	8346	9010	8835	8763	1549
20.03.2016	7105	7703	8358	9010	8849	8716	1329
10.03.2016	7103	7694	8350	9003	8842	8663	1196
29.02.2016	7090	7673	8311	8984	8812	8593	1031
20.02.2016	7076	7666	8285	8963	8799	8528	902
10.02.2016	7059	7640	8258	8937	8753	8423	759
31.01.2016	6903	7446	8027	8808	8790	7684	474
20.01.2016	6898	7445	8021	8801	8792	7580	367
10.01.2016	6897	7443	8009	8802	8791	7566	243
31.12.2015	6886	7436	7998	8781	8782	7430	--
20.12.2015	6885	7428	7990	8767	8743	7174	--
10.12.2015	6880	7417	7986	8753	8728	6900	--
30.11.2015	6870	7410	7987	8743	8703	6737	--
20.11.2015	6887	7401	7972	8740	8680	6507	--
10.11.2015	6859	7403	7963	8732	8675	6324	--
03.11.2015	6853	7398	7965	8726	8656	6194	--

So, the question is: is there a new trend -- or not?
We will see that pretty soon :).

[Update of November 20, 2015] Besides, it is truly exciting to observe the amazing dynamics of GoogleScholar citing rate changes. Yet another piece of data to consider from the perspective of the question as to what extent GoogleScholar is useful and usable as a research tool in the studies of the kind...[/Update]

[Update of January 11, 2017] The update of the tables has been discontinued as of now and here. For the continued data update and statistics for the 2017 see a newer post at http://psyanimajournal.livejournal.com/15748.html