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	<title>Trivers-Willard &#8211; Greg Laden&#039;s Blog</title>
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	<title>Trivers-Willard &#8211; Greg Laden&#039;s Blog</title>
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		<title>Whitey Bulger Convicted, and the Trivers Willard Hypothesis</title>
		<link>https://gregladen.com/blog/2013/08/12/whitey-bulger-convicted-and-the-trivers-willard-hypothesis/</link>
					<comments>https://gregladen.com/blog/2013/08/12/whitey-bulger-convicted-and-the-trivers-willard-hypothesis/#comments</comments>
		
		<dc:creator><![CDATA[Greg Laden]]></dc:creator>
		<pubDate>Mon, 12 Aug 2013 18:57:00 +0000</pubDate>
				<category><![CDATA[Behavioral Biology]]></category>
		<category><![CDATA[behavioral biology]]></category>
		<category><![CDATA[evolution]]></category>
		<category><![CDATA[Sex Differences]]></category>
		<category><![CDATA[Trivers-Willard]]></category>
		<category><![CDATA[Whitey Bulger]]></category>
		<guid isPermaLink="false">http://scienceblogs.com/gregladen/?p=17451</guid>

					<description><![CDATA[Whitey Bulger has finally been convicted of a small percentage of all the bad things he is said to have done. The Boston Globe has the details. James J. “Whitey” Bulger, the notorious Boston gangster who rampaged through the city’s underworld for decades before slipping away from authorities and eluding a worldwide manhunt for more &#8230; <a href="https://gregladen.com/blog/2013/08/12/whitey-bulger-convicted-and-the-trivers-willard-hypothesis/" class="more-link">Continue reading <span class="screen-reader-text">Whitey Bulger Convicted, and the Trivers Willard Hypothesis</span> <span class="meta-nav">&#8594;</span></a>]]></description>
		
					<wfw:commentRss>https://gregladen.com/blog/2013/08/12/whitey-bulger-convicted-and-the-trivers-willard-hypothesis/feed/</wfw:commentRss>
			<slash:comments>1</slash:comments>
		
		
		<post-id xmlns="com-wordpress:feed-additions:1">17451</post-id>	</item>
		<item>
		<title>Time Trauma Truth and Other Matters</title>
		<link>https://gregladen.com/blog/2011/08/22/time-trauma-truth-and-other-ma/</link>
					<comments>https://gregladen.com/blog/2011/08/22/time-trauma-truth-and-other-ma/#comments</comments>
		
		<dc:creator><![CDATA[Greg Laden]]></dc:creator>
		<pubDate>Mon, 22 Aug 2011 21:25:46 +0000</pubDate>
				<category><![CDATA[Gender and Sexual Orientation]]></category>
		<category><![CDATA[Sex Differences]]></category>
		<category><![CDATA[Trivers-Willard]]></category>
		<guid isPermaLink="false">http://scienceblogs.com/gregladen/2011/08/22/time-trauma-truth-and-other-ma/</guid>

					<description><![CDATA[First of all, I want you to know that I&#8217;ve devoted my life to this blog post so now you have every reason to love it more than any other blog post. Sniff sniff. Or, could it be that I&#8217;ve been watching too much America&#8217;s Got Talent (which, clearly, it does not, except that yo-yo &#8230; <a href="https://gregladen.com/blog/2011/08/22/time-trauma-truth-and-other-ma/" class="more-link">Continue reading <span class="screen-reader-text">Time Trauma Truth and Other Matters</span> <span class="meta-nav">&#8594;</span></a>]]></description>
		
					<wfw:commentRss>https://gregladen.com/blog/2011/08/22/time-trauma-truth-and-other-ma/feed/</wfw:commentRss>
			<slash:comments>12</slash:comments>
		
		
		<post-id xmlns="com-wordpress:feed-additions:1">10064</post-id>	</item>
		<item>
		<title>Tiger Woods has gone too far.</title>
		<link>https://gregladen.com/blog/2011/02/15/tiger-woods-has-gone-too-far/</link>
					<comments>https://gregladen.com/blog/2011/02/15/tiger-woods-has-gone-too-far/#comments</comments>
		
		<dc:creator><![CDATA[Greg Laden]]></dc:creator>
		<pubDate>Tue, 15 Feb 2011 08:52:37 +0000</pubDate>
				<category><![CDATA[Trivers-Willard]]></category>
		<guid isPermaLink="false">http://scienceblogs.com/gregladen/2011/02/15/tiger-woods-has-gone-too-far/</guid>

					<description><![CDATA[I did not get on the Tiger Hating bandwagon when it was revealed that he had a wife and 19 girlfriends. First, I&#8217;m sure they were all having a great time at some point. Second, I can see where his wife would be pissed off but she did marry a golfer after all. What else &#8230; <a href="https://gregladen.com/blog/2011/02/15/tiger-woods-has-gone-too-far/" class="more-link">Continue reading <span class="screen-reader-text">Tiger Woods has gone too far.</span> <span class="meta-nav">&#8594;</span></a>]]></description>
		
					<wfw:commentRss>https://gregladen.com/blog/2011/02/15/tiger-woods-has-gone-too-far/feed/</wfw:commentRss>
			<slash:comments>6</slash:comments>
		
		
		<post-id xmlns="com-wordpress:feed-additions:1">24796</post-id>	</item>
		<item>
		<title>The Natural Basis for Inequality of the Sexes</title>
		<link>https://gregladen.com/blog/2009/07/27/the-natural-basis-for-inequali/</link>
					<comments>https://gregladen.com/blog/2009/07/27/the-natural-basis-for-inequali/#comments</comments>
		
		<dc:creator><![CDATA[Greg Laden]]></dc:creator>
		<pubDate>Mon, 27 Jul 2009 12:50:51 +0000</pubDate>
				<category><![CDATA[Anthropology]]></category>
		<category><![CDATA[Behavioral Biology]]></category>
		<category><![CDATA[Evolutionary Biology]]></category>
		<category><![CDATA[Feminism]]></category>
		<category><![CDATA[Natural Selection]]></category>
		<category><![CDATA[Naturalistic Fallacy]]></category>
		<category><![CDATA[Sex Differences]]></category>
		<category><![CDATA[Trivers-Willard]]></category>
		<guid isPermaLink="false">http://scienceblogs.com/gregladen/2009/07/27/the-natural-basis-for-inequali/</guid>

					<description><![CDATA[Is the Natural World a valid source of guidance for our behavior, morals, ethics, and other more mundane areas of thought such as how to build an airplane and what to eat for breakfast?1 When it comes to airplanes, you&#8217;d better be a servant to the rules of nature (such as gravity) or the airplane &#8230; <a href="https://gregladen.com/blog/2009/07/27/the-natural-basis-for-inequali/" class="more-link">Continue reading <span class="screen-reader-text">The Natural Basis for Inequality of the Sexes</span> <span class="meta-nav">&#8594;</span></a>]]></description>
		
					<wfw:commentRss>https://gregladen.com/blog/2009/07/27/the-natural-basis-for-inequali/feed/</wfw:commentRss>
			<slash:comments>58</slash:comments>
		
		
		<post-id xmlns="com-wordpress:feed-additions:1">5938</post-id>	</item>
		<item>
		<title>Stealing Genes and Hypergyny</title>
		<link>https://gregladen.com/blog/2009/07/01/mail-order-brides-and-hypergny/</link>
					<comments>https://gregladen.com/blog/2009/07/01/mail-order-brides-and-hypergny/#comments</comments>
		
		<dc:creator><![CDATA[Greg Laden]]></dc:creator>
		<pubDate>Wed, 01 Jul 2009 00:01:55 +0000</pubDate>
				<category><![CDATA[Africa]]></category>
		<category><![CDATA[Anthropology]]></category>
		<category><![CDATA[Behavioral Biology]]></category>
		<category><![CDATA[Congo]]></category>
		<category><![CDATA[foragers]]></category>
		<category><![CDATA[Human sexuality]]></category>
		<category><![CDATA[hypergamy]]></category>
		<category><![CDATA[hypergyny]]></category>
		<category><![CDATA[kinship]]></category>
		<category><![CDATA[lost congo memoir]]></category>
		<category><![CDATA[marriage]]></category>
		<category><![CDATA[Trivers-Willard]]></category>
		<guid isPermaLink="false">http://scienceblogs.com/gregladen/2009/07/01/mail-order-brides-and-hypergny/</guid>

					<description><![CDATA[This post was originally titled &#8220;Mail Order Brides and Hypergyny.&#8221; I was prompted to revisit the post because it received a a rather astonishing comment that I chose not to allow, but I did post it on my Facebook page where any attention it would receive would be from the thoughtful people that make up &#8230; <a href="https://gregladen.com/blog/2009/07/01/mail-order-brides-and-hypergny/" class="more-link">Continue reading <span class="screen-reader-text">Stealing Genes and Hypergyny</span> <span class="meta-nav">&#8594;</span></a>]]></description>
		
					<wfw:commentRss>https://gregladen.com/blog/2009/07/01/mail-order-brides-and-hypergny/feed/</wfw:commentRss>
			<slash:comments>15</slash:comments>
		
		
		<post-id xmlns="com-wordpress:feed-additions:1">5775</post-id>	</item>
		<item>
		<title>Finches Determine Sex of Offspring</title>
		<link>https://gregladen.com/blog/2009/03/25/finches-determine-sex-of-offsp/</link>
					<comments>https://gregladen.com/blog/2009/03/25/finches-determine-sex-of-offsp/#respond</comments>
		
		<dc:creator><![CDATA[Greg Laden]]></dc:creator>
		<pubDate>Wed, 25 Mar 2009 18:01:31 +0000</pubDate>
				<category><![CDATA[Behavioral Biology]]></category>
		<category><![CDATA[Birds]]></category>
		<category><![CDATA[Evolutionary Biology]]></category>
		<category><![CDATA[Gender and Sexual Orientation]]></category>
		<category><![CDATA[Trivers-Willard]]></category>
		<guid isPermaLink="false">http://scienceblogs.com/gregladen/2009/03/25/finches-determine-sex-of-offsp/</guid>

					<description><![CDATA[As you know if you read my blog, Trivers Willard is an important theoretical construct which has been tested numerous times. TW works in some species, not in others, and overall, that should be predictable (accroding to TW). It turns out that finches control the sex of their offspring, and do so in a way &#8230; <a href="https://gregladen.com/blog/2009/03/25/finches-determine-sex-of-offsp/" class="more-link">Continue reading <span class="screen-reader-text">Finches Determine Sex of Offspring</span> <span class="meta-nav">&#8594;</span></a>]]></description>
		
					<wfw:commentRss>https://gregladen.com/blog/2009/03/25/finches-determine-sex-of-offsp/feed/</wfw:commentRss>
			<slash:comments>0</slash:comments>
		
		
		<post-id xmlns="com-wordpress:feed-additions:1">26220</post-id>	</item>
		<item>
		<title>Sex Ratio Bias in India</title>
		<link>https://gregladen.com/blog/2008/06/24/sex-ratio-bias-in-india/</link>
					<comments>https://gregladen.com/blog/2008/06/24/sex-ratio-bias-in-india/#comments</comments>
		
		<dc:creator><![CDATA[Greg Laden]]></dc:creator>
		<pubDate>Tue, 24 Jun 2008 21:50:07 +0000</pubDate>
				<category><![CDATA[Anthropology]]></category>
		<category><![CDATA[Behavioral Biology]]></category>
		<category><![CDATA[Sex Differences]]></category>
		<category><![CDATA[Trivers-Willard]]></category>
		<guid isPermaLink="false">http://scienceblogs.com/gregladen/2008/06/24/sex-ratio-bias-in-india/</guid>

					<description><![CDATA[Sometimes boys are worth more, sometimes girls are worth more. In an evolutionary sense. Or, more correctly, the value of a certain sex &#8230; as an offspring &#8230; can be measured in fitness terms. Fisher noted this and hypothesized this was the explanation for the 50-50 sex ratio we usually see. As one sex becomes &#8230; <a href="https://gregladen.com/blog/2008/06/24/sex-ratio-bias-in-india/" class="more-link">Continue reading <span class="screen-reader-text">Sex Ratio Bias in India</span> <span class="meta-nav">&#8594;</span></a>]]></description>
		
					<wfw:commentRss>https://gregladen.com/blog/2008/06/24/sex-ratio-bias-in-india/feed/</wfw:commentRss>
			<slash:comments>11</slash:comments>
		
		
		<post-id xmlns="com-wordpress:feed-additions:1">2813</post-id>	</item>
		<item>
		<title>Why is There no Birth Control Pill for Men?</title>
		<link>https://gregladen.com/blog/2008/01/10/why-is-there-no-birth-control/</link>
					<comments>https://gregladen.com/blog/2008/01/10/why-is-there-no-birth-control/#comments</comments>
		
		<dc:creator><![CDATA[Greg Laden]]></dc:creator>
		<pubDate>Thu, 10 Jan 2008 10:00:00 +0000</pubDate>
				<category><![CDATA[Anthropology]]></category>
		<category><![CDATA[Behavioral Biology]]></category>
		<category><![CDATA[Evolution]]></category>
		<category><![CDATA[Evolutionary Biology]]></category>
		<category><![CDATA[Gender and Sexual Orientation]]></category>
		<category><![CDATA[Sex Differences]]></category>
		<category><![CDATA[Trivers-Willard]]></category>
		<guid isPermaLink="false">http://scienceblogs.com/gregladen/2008/01/10/why-is-there-no-birth-control/</guid>

					<description><![CDATA[Why is there no Birth Control Pill for men?This latest &#8220;Ask a ScienceBlogger&#8221; question will certainly engender a wide range of responses from the Scienceblogs.com team. Answers may address physiology, endocrinology, pharmacology, economics, and other areas of scientific thinking and practice. The answer I&#8217;d like to propose can be summed up in two closely linked &#8230; <a href="https://gregladen.com/blog/2008/01/10/why-is-there-no-birth-control/" class="more-link">Continue reading <span class="screen-reader-text">Why is There no Birth Control Pill for Men?</span> <span class="meta-nav">&#8594;</span></a>]]></description>
		
					<wfw:commentRss>https://gregladen.com/blog/2008/01/10/why-is-there-no-birth-control/feed/</wfw:commentRss>
			<slash:comments>8</slash:comments>
		
		
		<post-id xmlns="com-wordpress:feed-additions:1">2532</post-id>	</item>
		<item>
		<title>Macaque Mothers Favor Their Sons</title>
		<link>https://gregladen.com/blog/2007/11/20/macaque-mothers-favor-their-so/</link>
					<comments>https://gregladen.com/blog/2007/11/20/macaque-mothers-favor-their-so/#respond</comments>
		
		<dc:creator><![CDATA[Greg Laden]]></dc:creator>
		<pubDate>Tue, 20 Nov 2007 15:59:19 +0000</pubDate>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[Trivers-Willard]]></category>
		<guid isPermaLink="false">http://scienceblogs.com/gregladen/2007/11/20/macaque-mothers-favor-their-so/</guid>

					<description><![CDATA[The Trivers Willard Hypothesis predicts that under certain conditions, individuals will bias their investment in offspring differently depending on the sex of the offspring. It is believed that this can be as extreme as infanticide or as subtle as providing different amounts of breast milk. A new study by Katherine HInde finds that macaques may &#8230; <a href="https://gregladen.com/blog/2007/11/20/macaque-mothers-favor-their-so/" class="more-link">Continue reading <span class="screen-reader-text">Macaque Mothers Favor Their Sons</span> <span class="meta-nav">&#8594;</span></a>]]></description>
		
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			<slash:comments>0</slash:comments>
		
		
		<post-id xmlns="com-wordpress:feed-additions:1">1020</post-id>	</item>
		<item>
		<title>Whitey Bulger and the Evolution of Sex Bias in Investment in Offspring</title>
		<link>https://gregladen.com/blog/2007/11/20/whitey-bulger-and-the-evolutio/</link>
					<comments>https://gregladen.com/blog/2007/11/20/whitey-bulger-and-the-evolutio/#comments</comments>
		
		<dc:creator><![CDATA[Greg Laden]]></dc:creator>
		<pubDate>Tue, 20 Nov 2007 14:59:19 +0000</pubDate>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[Trivers-Willard]]></category>
		<category><![CDATA[Whitey Bulger]]></category>
		<guid isPermaLink="false">http://scienceblogs.com/gregladen/2007/11/20/whitey-bulger-and-the-evolutio/</guid>

					<description><![CDATA[Most of you won&#8217;t know who Whitey Bulger is. He is actually on the FBI&#8217;s ten most wanted list. He may have been spotted in Italy last Spring, and the FBI is just now asking for assistance from anyone who knows where he might be. (That&#8217;s not gonna work.) Whitey was top dog in Boston&#8217;s &#8230; <a href="https://gregladen.com/blog/2007/11/20/whitey-bulger-and-the-evolutio/" class="more-link">Continue reading <span class="screen-reader-text">Whitey Bulger and the Evolution of Sex Bias in Investment in Offspring</span> <span class="meta-nav">&#8594;</span></a>]]></description>
		
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			<slash:comments>2</slash:comments>
		
		
		<post-id xmlns="com-wordpress:feed-additions:1">1018</post-id>	</item>
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